OPENSUSE-SU-2026:21853-1
Vulnerability from csaf_opensuse - Published: 2026-09-15 14:40 - Updated: 2026-09-17 17:44Summary
Security update for MozillaFirefox
Severity
Important
Notes
Title of the patch: Security update for MozillaFirefox
Description of the patch: This update for MozillaFirefox fixes the following issues:
Firefox Extended Support Release 153.2.0 ESR MFSA 2026-85 (bsc#1278001):
* CVE-2026-75874 (bmo#2039972)
Sandbox escape in the Remote Settings Client component
* CVE-2026-84118 (bmo#2057457)
Use-after-free in the JavaScript: GC component
* CVE-2026-84119 (bmo#2057817)
Sandbox escape due to use-after-free in the DOM: Navigation
component
* CVE-2026-84120 (bmo#2058911)
Use-after-free in the Audio/Video component
* CVE-2026-84121 (bmo#2059018)
Sandbox escape due to use-after-free in the DOM: Security
* CVE-2026-84122 (bmo#2059965)
* CVE-2026-84123 (bmo#2060047)
Privilege escalation due to use-after-free in the Graphics:
WebGPU component
* CVE-2026-84124 (bmo#2061110)
Use-after-free in the DOM: Core & HTML component
* CVE-2026-84125 (bmo#2063871)
* CVE-2026-74952 (bmo#2021757)
Privilege escalation in the Application Update component
* CVE-2026-84129 (bmo#2055028)
Site isolation issue in the DOM: Navigation component
* CVE-2026-84130 (bmo#2057834)
Information disclosure in the Graphics: WebGPU component
* CVE-2026-84131 (bmo#2060008)
Privilege escalation due to invalid pointer in the Graphics
* CVE-2026-84132 (bmo#2063020)
Information disclosure in the Networking: HTTP component
* CVE-2026-84133 (bmo#2032388)
Site isolation issue in the DOM: Push Subscriptions component
* CVE-2026-84134 (bmo#2044882)
Other issue in the Profile Backup component
* CVE-2026-84136 (bmo#2048699)
Other issue in the DOM: Navigation component
* CVE-2026-84137 (bmo#2051146)
Spoofing issue in the DOM: Core & HTML component
* CVE-2026-84139 (bmo#2060153)
Clickjacking issue in the DOM: Events component
* CVE-2026-84140 (bmo#2063780)
* CVE-2026-84141 (bmo#2063994)
Integer overflow in the Graphics: ImageLib component
* CVE-2026-84143 (bmo#2048793, bmo#2054631, bmo#2054645,
bmo#2054657, bmo#2055007, bmo#2055681, bmo#2057107,
bmo#2057108, bmo#2057114, bmo#2058087, bmo#2058088,
bmo#2058090, bmo#2058095, bmo#2058101, bmo#2059109,
bmo#2059183, bmo#2059185, bmo#2061287, bmo#2061301,
bmo#2061325)
Internally found bugs fixed in Firefox 155, Firefox ESR 153.2
and Firefox ESR 140.15
* CVE-2026-84144 (bmo#2054619, bmo#2054620, bmo#2054624,
bmo#2054625, bmo#2054691, bmo#2054702, bmo#2054726,
bmo#2054775, bmo#2055703, bmo#2058006, bmo#2058013,
bmo#2058085, bmo#2058098, bmo#2058627, bmo#2058661,
bmo#2059002, bmo#2059127, bmo#2059128, bmo#2059144,
bmo#2059180, bmo#2059191, bmo#2059192, bmo#2059199,
bmo#2059205, bmo#2061320, bmo#2061430, bmo#2061495,
bmo#2061505, bmo#2061521, bmo#2061532, bmo#2061775,
bmo#2061799, bmo#2062395, bmo#2062404)
Internally found bugs fixed in Firefox 155 and Firefox ESR
153.2
* CVE-2026-84145 (bmo#2054640, bmo#2054650, bmo#2054652,
bmo#2055678, bmo#2055693, bmo#2055705, bmo#2058001,
bmo#2058051, bmo#2058652, bmo#2058660, bmo#2059027,
bmo#2059139, bmo#2061220, bmo#2061242, bmo#2061285,
bmo#2061300, bmo#2061316, bmo#2061397, bmo#2062400,
bmo#2062419)
Internally found bugs fixed in Firefox 155, Firefox ESR
153.2, Firefox ESR 140.15 and Firefox ESR 115.40
Patchnames: openSUSE-Leap-16.0-1684
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Recommended
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-0:153.2.0-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-0:153.2.0-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-0:153.2.0-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-branding-upstream-0:153.2.0-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-branding-upstream-0:153.2.0-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-branding-upstream-0:153.2.0-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-devel-0:153.2.0-160000.1.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-translations-common-0:153.2.0-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-translations-common-0:153.2.0-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-translations-common-0:153.2.0-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-translations-other-0:153.2.0-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-translations-other-0:153.2.0-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:MozillaFirefox-translations-other-0:153.2.0-160000.1.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
5.4 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
8.3 (High)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
5.4 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
8.3 (High)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
5.4 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
8.8 (High)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
5.4 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
5.4 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
8.8 (High)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
6.1 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
4.3 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
6.1 (Medium)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
9.8 (Critical)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
9.8 (Critical)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
9.8 (Critical)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
7.5 (High)
Affected products
Recommended
13 products, the same list as for
CVE-2026-74952
Threats
Impact
important
References
99 references
{
"document": {
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{
"category": "summary",
"text": "Security update for MozillaFirefox",
"title": "Title of the patch"
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"text": "This update for MozillaFirefox fixes the following issues:\n\nFirefox Extended Support Release 153.2.0 ESR MFSA 2026-85 (bsc#1278001):\n\n * CVE-2026-75874 (bmo#2039972)\n Sandbox escape in the Remote Settings Client component\n * CVE-2026-84118 (bmo#2057457)\n Use-after-free in the JavaScript: GC component\n * CVE-2026-84119 (bmo#2057817)\n Sandbox escape due to use-after-free in the DOM: Navigation\n component\n * CVE-2026-84120 (bmo#2058911)\n Use-after-free in the Audio/Video component\n * CVE-2026-84121 (bmo#2059018)\n Sandbox escape due to use-after-free in the DOM: Security\n * CVE-2026-84122 (bmo#2059965)\n * CVE-2026-84123 (bmo#2060047)\n Privilege escalation due to use-after-free in the Graphics:\n WebGPU component\n * CVE-2026-84124 (bmo#2061110)\n Use-after-free in the DOM: Core \u0026 HTML component\n * CVE-2026-84125 (bmo#2063871)\n * CVE-2026-74952 (bmo#2021757)\n Privilege escalation in the Application Update component\n * CVE-2026-84129 (bmo#2055028)\n Site isolation issue in the DOM: Navigation component\n * CVE-2026-84130 (bmo#2057834)\n Information disclosure in the Graphics: WebGPU component\n * CVE-2026-84131 (bmo#2060008)\n Privilege escalation due to invalid pointer in the Graphics\n * CVE-2026-84132 (bmo#2063020)\n Information disclosure in the Networking: HTTP component\n * CVE-2026-84133 (bmo#2032388)\n Site isolation issue in the DOM: Push Subscriptions component\n * CVE-2026-84134 (bmo#2044882)\n Other issue in the Profile Backup component\n * CVE-2026-84136 (bmo#2048699)\n Other issue in the DOM: Navigation component\n * CVE-2026-84137 (bmo#2051146)\n Spoofing issue in the DOM: Core \u0026 HTML component\n * CVE-2026-84139 (bmo#2060153)\n Clickjacking issue in the DOM: Events component\n * CVE-2026-84140 (bmo#2063780)\n * CVE-2026-84141 (bmo#2063994)\n Integer overflow in the Graphics: ImageLib component\n * CVE-2026-84143 (bmo#2048793, bmo#2054631, bmo#2054645,\n bmo#2054657, bmo#2055007, bmo#2055681, bmo#2057107,\n bmo#2057108, bmo#2057114, bmo#2058087, bmo#2058088,\n bmo#2058090, bmo#2058095, bmo#2058101, bmo#2059109,\n bmo#2059183, bmo#2059185, bmo#2061287, bmo#2061301,\n bmo#2061325)\n Internally found bugs fixed in Firefox 155, Firefox ESR 153.2\n and Firefox ESR 140.15\n * CVE-2026-84144 (bmo#2054619, bmo#2054620, bmo#2054624,\n bmo#2054625, bmo#2054691, bmo#2054702, bmo#2054726,\n bmo#2054775, bmo#2055703, bmo#2058006, bmo#2058013,\n bmo#2058085, bmo#2058098, bmo#2058627, bmo#2058661,\n bmo#2059002, bmo#2059127, bmo#2059128, bmo#2059144,\n bmo#2059180, bmo#2059191, bmo#2059192, bmo#2059199,\n bmo#2059205, bmo#2061320, bmo#2061430, bmo#2061495,\n bmo#2061505, bmo#2061521, bmo#2061532, bmo#2061775,\n bmo#2061799, bmo#2062395, bmo#2062404)\n Internally found bugs fixed in Firefox 155 and Firefox ESR\n 153.2\n * CVE-2026-84145 (bmo#2054640, bmo#2054650, bmo#2054652,\n bmo#2055678, bmo#2055693, bmo#2055705, bmo#2058001,\n bmo#2058051, bmo#2058652, bmo#2058660, bmo#2059027,\n bmo#2059139, bmo#2061220, bmo#2061242, bmo#2061285,\n bmo#2061300, bmo#2061316, bmo#2061397, bmo#2062400,\n bmo#2062419)\n Internally found bugs fixed in Firefox 155, Firefox ESR\n 153.2, Firefox ESR 140.15 and Firefox ESR 115.40\n",
"title": "Description of the patch"
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{
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"publisher": {
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{
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{
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{
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{
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"url": "https://www.suse.com/security/cve/CVE-2026-84119/"
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{
"category": "self",
"summary": "SUSE CVE CVE-2026-84120 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84120/"
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{
"category": "self",
"summary": "SUSE CVE CVE-2026-84121 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84121/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84122 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84122/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84123 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84123/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84124 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84124/"
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"url": "https://www.suse.com/security/cve/CVE-2026-84125/"
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"url": "https://www.suse.com/security/cve/CVE-2026-84129/"
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{
"category": "self",
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"url": "https://www.suse.com/security/cve/CVE-2026-84130/"
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{
"category": "self",
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"url": "https://www.suse.com/security/cve/CVE-2026-84131/"
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{
"category": "self",
"summary": "SUSE CVE CVE-2026-84132 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84132/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84133 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84133/"
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{
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"url": "https://www.suse.com/security/cve/CVE-2026-84134/"
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"url": "https://www.suse.com/security/cve/CVE-2026-84136/"
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"url": "https://www.suse.com/security/cve/CVE-2026-84139/"
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"url": "https://www.suse.com/security/cve/CVE-2026-84140/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84141 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84141/"
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{
"category": "self",
"summary": "SUSE CVE CVE-2026-84143 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84143/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84144 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84144/"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-84145 page",
"url": "https://www.suse.com/security/cve/CVE-2026-84145/"
}
],
"title": "Security update for MozillaFirefox",
"tracking": {
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"number": "1",
"summary": "Current version"
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{
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{
"branches": [
{
"category": "product_version",
"name": "MozillaFirefox-0:153.2.0-160000.1.1.aarch64",
"product": {
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"product_identification_helper": {
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"purl": "pkg:rpm/suse/MozillaFirefox@153.2.0-160000.1.1?arch=aarch64\u0026upstream=MozillaFirefox-0:153.2.0-160000.1.1.src.rpm"
}
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{
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"product": {
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"product_identification_helper": {
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"purl": "pkg:rpm/suse/MozillaFirefox-branding-upstream@153.2.0-160000.1.1?arch=aarch64\u0026upstream=MozillaFirefox-0:153.2.0-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
"name": "MozillaFirefox-translations-common-0:153.2.0-160000.1.1.aarch64",
"product": {
"name": "MozillaFirefox-translations-common-0:153.2.0-160000.1.1.aarch64",
"product_id": "MozillaFirefox-translations-common-0:153.2.0-160000.1.1.aarch64",
"product_identification_helper": {
"cpe": "cpe:2.3:a:mozilla:firefox:153.2.0:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/MozillaFirefox-translations-common@153.2.0-160000.1.1?arch=aarch64\u0026upstream=MozillaFirefox-0:153.2.0-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
"name": "MozillaFirefox-translations-other-0:153.2.0-160000.1.1.aarch64",
"product": {
"name": "MozillaFirefox-translations-other-0:153.2.0-160000.1.1.aarch64",
"product_id": "MozillaFirefox-translations-other-0:153.2.0-160000.1.1.aarch64",
"product_identification_helper": {
"cpe": "cpe:2.3:a:mozilla:firefox:153.2.0:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/MozillaFirefox-translations-other@153.2.0-160000.1.1?arch=aarch64\u0026upstream=MozillaFirefox-0:153.2.0-160000.1.1.src.rpm"
}
}
}
],
"category": "architecture",
"name": "aarch64"
},
{
"branches": [
{
"category": "product_version",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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.
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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.
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