RHSA-2026:77631
Vulnerability from csaf_redhat - Published: 2026-10-08 07:08 - Updated: 2026-10-08 08:03A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the DOM: Workers component
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64 | — |
Vendor Fix
fix
|
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape in the Remote Settings Client component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to use-after-free in the DOM: Navigation component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Audio/Video component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to use-after-free in the DOM: Security component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the Audio/Video component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation due to invalid pointer in the Graphics component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Internally found bugs present in Firefox 154, Firefox ESR 153.1 and Firefox ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Internally found bugs present in Firefox 154, Firefox ESR 153.1, Firefox ESR 140.14 and Firefox ESR 115.39. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited.
A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Triggering an error condition in certain MIME bodies would cause uninitialized memory to be used.
A flaw was found in Thunderbird. A remote attacker could exploit this vulnerability by sending a maliciously constructed mail header. This could lead to a one-byte read past the end of a buffer, potentially resulting in information disclosure or other unpredictable behavior.
A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js.
CWE-825 - Expired Pointer Dereference{
"document": {
"aggregate_severity": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"text": "Important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "summary",
"text": "An update for thunderbird is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
"title": "Topic"
},
{
"category": "general",
"text": "Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nSecurity Fix(es):\n\n* firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365)\n\n* firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121)\n\n* firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119)\n\n* firefox: Use-after-free in the Audio/Video component (CVE-2026-84120)\n\n* firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131)\n\n* firefox: Use-after-free in the DOM: Core \u0026 HTML component (CVE-2026-84124)\n\n* firefox: Use-after-free in the Audio/Video component (CVE-2026-84122)\n\n* firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)\n\n* thunderbird: Uninitialized memory in MIME parsing (CVE-2026-84639)\n\n* thunderbird: Information disclosure due to malicious IMAP server response (CVE-2026-84641)\n\n* thunderbird: One byte overflow read in mail parser (CVE-2026-84640)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
"title": "Details"
},
{
"category": "legal_disclaimer",
"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
"title": "Terms of Use"
}
],
"publisher": {
"category": "vendor",
"contact_details": "https://access.redhat.com/security/team/contact/",
"issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
"name": "Red Hat Product Security",
"namespace": "https://www.redhat.com"
},
"references": [
{
"category": "self",
"summary": "https://access.redhat.com/errata/RHSA-2026:77631",
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/updates/classification/#important",
"url": "https://access.redhat.com/security/updates/classification/#important"
},
{
"category": "external",
"summary": "2503504",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503504"
},
{
"category": "external",
"summary": "2517832",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517832"
},
{
"category": "external",
"summary": "2526753",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526753"
},
{
"category": "external",
"summary": "2526760",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526760"
},
{
"category": "external",
"summary": "2526764",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526764"
},
{
"category": "external",
"summary": "2526765",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526765"
},
{
"category": "external",
"summary": "2526767",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526767"
},
{
"category": "external",
"summary": "2526773",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526773"
},
{
"category": "external",
"summary": "2526778",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526778"
},
{
"category": "external",
"summary": "2526781",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526781"
},
{
"category": "external",
"summary": "2527113",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527113"
},
{
"category": "external",
"summary": "2527115",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527115"
},
{
"category": "external",
"summary": "2527116",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527116"
},
{
"category": "self",
"summary": "Canonical URL",
"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_77631.json"
}
],
"title": "Red Hat Security Advisory: thunderbird security update",
"tracking": {
"current_release_date": "2026-10-08T08:03:55+00:00",
"generator": {
"date": "2026-10-08T08:03:55+00:00",
"engine": {
"name": "Red Hat SDEngine",
"version": "5.4.0"
}
},
"id": "RHSA-2026:77631",
"initial_release_date": "2026-10-08T07:08:03+00:00",
"revision_history": [
{
"date": "2026-10-08T07:08:03+00:00",
"number": "1",
"summary": "Initial version"
},
{
"date": "2026-10-08T07:08:03+00:00",
"number": "2",
"summary": "Last updated version"
},
{
"date": "2026-10-08T08:03:55+00:00",
"number": "3",
"summary": "Last generated version"
}
],
"status": "final",
"version": "3"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product": {
"name": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux_eus:10.0"
}
}
}
],
"category": "product_family",
"name": "Red Hat Enterprise Linux"
},
{
"branches": [
{
"category": "product_version",
"name": "thunderbird-0:140.15.0-1.el10_0.src",
"product": {
"name": "thunderbird-0:140.15.0-1.el10_0.src",
"product_id": "thunderbird-0:140.15.0-1.el10_0.src",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird@140.15.0-1.el10_0?arch=src"
}
}
}
],
"category": "architecture",
"name": "src"
},
{
"branches": [
{
"category": "product_version",
"name": "thunderbird-0:140.15.0-1.el10_0.aarch64",
"product": {
"name": "thunderbird-0:140.15.0-1.el10_0.aarch64",
"product_id": "thunderbird-0:140.15.0-1.el10_0.aarch64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird@140.15.0-1.el10_0?arch=aarch64"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"product": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"product_id": "thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debugsource@140.15.0-1.el10_0?arch=aarch64"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"product": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"product_id": "thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debuginfo@140.15.0-1.el10_0?arch=aarch64"
}
}
}
],
"category": "architecture",
"name": "aarch64"
},
{
"branches": [
{
"category": "product_version",
"name": "thunderbird-0:140.15.0-1.el10_0.ppc64le",
"product": {
"name": "thunderbird-0:140.15.0-1.el10_0.ppc64le",
"product_id": "thunderbird-0:140.15.0-1.el10_0.ppc64le",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird@140.15.0-1.el10_0?arch=ppc64le"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"product": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"product_id": "thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debugsource@140.15.0-1.el10_0?arch=ppc64le"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"product": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"product_id": "thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debuginfo@140.15.0-1.el10_0?arch=ppc64le"
}
}
}
],
"category": "architecture",
"name": "ppc64le"
},
{
"branches": [
{
"category": "product_version",
"name": "thunderbird-0:140.15.0-1.el10_0.s390x",
"product": {
"name": "thunderbird-0:140.15.0-1.el10_0.s390x",
"product_id": "thunderbird-0:140.15.0-1.el10_0.s390x",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird@140.15.0-1.el10_0?arch=s390x"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"product": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"product_id": "thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debugsource@140.15.0-1.el10_0?arch=s390x"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"product": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"product_id": "thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debuginfo@140.15.0-1.el10_0?arch=s390x"
}
}
}
],
"category": "architecture",
"name": "s390x"
},
{
"branches": [
{
"category": "product_version",
"name": "thunderbird-0:140.15.0-1.el10_0.x86_64",
"product": {
"name": "thunderbird-0:140.15.0-1.el10_0.x86_64",
"product_id": "thunderbird-0:140.15.0-1.el10_0.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird@140.15.0-1.el10_0?arch=x86_64"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64",
"product": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64",
"product_id": "thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debugsource@140.15.0-1.el10_0?arch=x86_64"
}
}
},
{
"category": "product_version",
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"product": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"product_id": "thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/thunderbird-debuginfo@140.15.0-1.el10_0?arch=x86_64"
}
}
}
],
"category": "architecture",
"name": "x86_64"
}
],
"category": "vendor",
"name": "Red Hat"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-0:140.15.0-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64"
},
"product_reference": "thunderbird-0:140.15.0-1.el10_0.aarch64",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-0:140.15.0-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le"
},
"product_reference": "thunderbird-0:140.15.0-1.el10_0.ppc64le",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-0:140.15.0-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x"
},
"product_reference": "thunderbird-0:140.15.0-1.el10_0.s390x",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-0:140.15.0-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src"
},
"product_reference": "thunderbird-0:140.15.0-1.el10_0.src",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-0:140.15.0-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64"
},
"product_reference": "thunderbird-0:140.15.0-1.el10_0.x86_64",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64"
},
"product_reference": "thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le"
},
"product_reference": "thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x"
},
"product_reference": "thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64"
},
"product_reference": "thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64"
},
"product_reference": "thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le"
},
"product_reference": "thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x"
},
"product_reference": "thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"product_id": "AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
},
"product_reference": "thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64",
"relates_to_product_reference": "AppStream-10.0.Z.E2S"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-16365",
"cwe": {
"id": "CWE-266",
"name": "Incorrect Privilege Assignment"
},
"discovery_date": "2026-07-21T13:04:26.479804+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2503504"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox and Thunderbird. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nPrivilege escalation in the DOM: Workers component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: thunderbird: Privilege escalation in the DOM: Workers component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-16365"
},
{
"category": "external",
"summary": "RHBZ#2503504",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503504"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-16365",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-16365"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-16365",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16365"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-68/#CVE-2026-16365",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-68/#CVE-2026-16365"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-71/#CVE-2026-16365",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-71/#CVE-2026-16365"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-16365",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-16365"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-16365",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-16365"
}
],
"release_date": "2026-07-21T12:37:37.777000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: thunderbird: Privilege escalation in the DOM: Workers component"
},
{
"cve": "CVE-2026-75874",
"cwe": {
"id": "CWE-653",
"name": "Improper Isolation or Compartmentalization"
},
"discovery_date": "2026-08-18T12:43:15.752857+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2517832"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox and Thunderbird. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nSandbox escape in the Remote Settings Client component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: thunderbird: Sandbox escape in the Remote Settings Client component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-75874"
},
{
"category": "external",
"summary": "RHBZ#2517832",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517832"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-75874",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-75874"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-75874",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75874"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-74/#CVE-2026-75874",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/#CVE-2026-75874"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-78/#CVE-2026-75874",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/#CVE-2026-75874"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-75874",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-75874"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-75874",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-75874"
}
],
"release_date": "2026-08-18T12:23:35.478000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: thunderbird: Sandbox escape in the Remote Settings Client component"
},
{
"cve": "CVE-2026-84119",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:43:28.620426+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526764"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nSandbox escape due to use-after-free in the DOM: Navigation component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Sandbox escape due to use-after-free in the DOM: Navigation component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84119"
},
{
"category": "external",
"summary": "RHBZ#2526764",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526764"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84119",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84119"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84119",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84119"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84119",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84119"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84119",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84119"
}
],
"release_date": "2026-09-01T12:18:39.358000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Sandbox escape due to use-after-free in the DOM: Navigation component"
},
{
"cve": "CVE-2026-84120",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:43:14.575017+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526765"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nUse-after-free in the Audio/Video component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Use-after-free in the Audio/Video component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84120"
},
{
"category": "external",
"summary": "RHBZ#2526765",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526765"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84120",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84120"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84120",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84120"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84120",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84120"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84120",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84120"
}
],
"release_date": "2026-09-01T12:18:40.455000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Use-after-free in the Audio/Video component"
},
{
"cve": "CVE-2026-84121",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:41:01.830919+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526753"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nSandbox escape due to use-after-free in the DOM: Security component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Sandbox escape due to use-after-free in the DOM: Security component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84121"
},
{
"category": "external",
"summary": "RHBZ#2526753",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526753"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84121",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84121"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84121",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84121"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84121",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84121"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84121",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84121"
}
],
"release_date": "2026-09-01T12:18:41.535000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Sandbox escape due to use-after-free in the DOM: Security component"
},
{
"cve": "CVE-2026-84122",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:47:01.391072+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526778"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nUse-after-free in the Audio/Video component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Use-after-free in the Audio/Video component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84122"
},
{
"category": "external",
"summary": "RHBZ#2526778",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526778"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84122",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84122"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84122",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84122"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84122",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84122"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84122",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84122"
}
],
"release_date": "2026-09-01T12:18:49.637000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Use-after-free in the Audio/Video component"
},
{
"cve": "CVE-2026-84124",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:45:22.505644+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526773"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nUse-after-free in the DOM: Core \u0026 HTML component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Use-after-free in the DOM: Core \u0026 HTML component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84124"
},
{
"category": "external",
"summary": "RHBZ#2526773",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526773"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84124",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84124"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84124",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84124"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-82/#CVE-2026-84124",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-82/#CVE-2026-84124"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84124",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84124"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84124",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84124"
}
],
"release_date": "2026-09-01T12:18:51.705000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Use-after-free in the DOM: Core \u0026 HTML component"
},
{
"cve": "CVE-2026-84131",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:43:55.232756+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526767"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nPrivilege escalation due to invalid pointer in the Graphics component",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Privilege escalation due to invalid pointer in the Graphics component",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84131"
},
{
"category": "external",
"summary": "RHBZ#2526767",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526767"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84131",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84131"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84131",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84131"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84131",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84131"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84131",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84131"
}
],
"release_date": "2026-09-01T12:18:42.768000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "firefox: Privilege escalation due to invalid pointer in the Graphics component"
},
{
"cve": "CVE-2026-84143",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-09-01T12:47:28.592903+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526781"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nInternally found bugs present in Firefox 154, Firefox ESR 153.1 and Firefox ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84143"
},
{
"category": "external",
"summary": "RHBZ#2526781",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526781"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84143",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84143"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84143",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84143"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84143",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84143"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84143",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84143"
}
],
"release_date": "2026-09-01T12:19:10.109000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15"
},
{
"cve": "CVE-2026-84145",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T12:42:33.455531+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2526760"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Firefox. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nInternally found bugs present in Firefox 154, Firefox ESR 153.1, Firefox ESR 140.14 and Firefox ESR 115.39. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84145"
},
{
"category": "external",
"summary": "RHBZ#2526760",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526760"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84145",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84145"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84145",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84145"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84145",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/#CVE-2026-84145"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84145",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84145"
}
],
"release_date": "2026-09-01T12:18:43.808000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40"
},
{
"cve": "CVE-2026-84639",
"cwe": {
"id": "CWE-824",
"name": "Access of Uninitialized Pointer"
},
"discovery_date": "2026-09-01T21:41:05.621268+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2527113"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Thunderbird. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nTriggering an error condition in certain MIME bodies would cause uninitialized\nmemory to be used.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "thunderbird: Uninitialized memory in MIME parsing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84639"
},
{
"category": "external",
"summary": "RHBZ#2527113",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527113"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84639",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84639"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84639",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84639"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84639",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84639"
}
],
"release_date": "2026-09-01T21:33:06.251000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "thunderbird: Uninitialized memory in MIME parsing"
},
{
"cve": "CVE-2026-84640",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-09-01T21:41:18.016580+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2527116"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Thunderbird. A remote attacker could exploit this vulnerability by sending a maliciously constructed mail header. This could lead to a one-byte read past the end of a buffer, potentially resulting in information disclosure or other unpredictable behavior.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "thunderbird: One byte overflow read in mail parser",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84640"
},
{
"category": "external",
"summary": "RHBZ#2527116",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527116"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84640",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84640"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84640",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84640"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84640",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84640"
}
],
"release_date": "2026-09-01T21:33:06.832000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "thunderbird: One byte overflow read in mail parser"
},
{
"cve": "CVE-2026-84641",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-01T21:41:48.975643+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2527115"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Thunderbird. The Mozilla Foundation\u0027s Security Advisory describes the following issue:\nA malicious IMAP server can trigger use-after-free and heap-memory disclosure\nby sending a crafted ID response. Heap contents can ultimately be persisted\nto prefs.js.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "thunderbird: Information disclosure due to malicious IMAP server response",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-84641"
},
{
"category": "external",
"summary": "RHBZ#2527115",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527115"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84641",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84641"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84641",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84641"
},
{
"category": "external",
"summary": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84641",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/#CVE-2026-84641"
}
],
"release_date": "2026-09-01T21:33:07.410000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-08T07:08:03+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:77631"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 3.4,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
"version": "3.1"
},
"products": [
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.src",
"AppStream-10.0.Z.E2S:thunderbird-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debuginfo-0:140.15.0-1.el10_0.x86_64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.aarch64",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.ppc64le",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.s390x",
"AppStream-10.0.Z.E2S:thunderbird-debugsource-0:140.15.0-1.el10_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "thunderbird: Information disclosure due to malicious IMAP server response"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.