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6959 vulnerabilities found for firefox by mozilla
CVE-2026-75874 (GCVE-0-2026-75874)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:24
VLAI
EPSS
VEX
Title
Sandbox escape in the Remote Settings Client component
Summary
Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154 and Thunderbird 154.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:23 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
154 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
154 , ≤ *
(rpm)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 10,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
}
},
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"content": {
"id": "CVE-2026-75874",
"options": [
{
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},
{
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},
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}
],
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"timestamp": "2026-08-18T19:23:52.490532Z",
"version": "2.0.3"
},
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}
}
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{
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{
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}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T19:24:04.720Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "crixer"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154 and Thunderbird 154."
}
],
"value": "Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154 and Thunderbird 154."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:26.251Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2039972"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
}
],
"title": "Sandbox escape in the Remote Settings Client component"
}
},
"cveMetadata": {
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"datePublished": "2026-08-18T12:23:35.478Z",
"dateReserved": "2026-08-18T12:23:35.313Z",
"dateUpdated": "2026-08-18T19:24:04.720Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2"
}
CVE-2026-74990 (GCVE-0-2026-74990)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:28
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154
Summary
Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:27 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.39 , ≤ 115.*
(rpm)
Unaffected: 140.14 , ≤ 140.* (rpm) Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
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"confidentialityImpact": "HIGH",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
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"timestamp": "2026-08-18T19:27:52.706061Z",
"version": "2.0.3"
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"cweId": "CWE-119",
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],
"providerMetadata": {
"dateUpdated": "2026-08-18T19:28:52.918Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "115.*",
"status": "unaffected",
"version": "115.39",
"versionType": "rpm"
},
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Christian Holler, Jan de Mooij, Tom Ritter and the Mozilla Fuzzing Team"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"value": "Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:25.249Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"name": "Moderate Severity internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045762%2C2052401%2C2058208"
},
{
"name": "High Severity internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045774%2C2048490%2C2050864%2C2053159%2C2053260%2C2053261%2C2053582%2C2053599%2C2053607%2C2053608%2C2053853%2C2054626%2C2054627%2C2054635%2C2054677%2C2054740%2C2054832%2C2056792%2C2057098%2C2057100%2C2057101%2C2057103%2C2057117%2C2057118%2C2058048%2C2058049%2C2058622%2C2058623%2C2058665%2C2058666%2C2059121%2C2059164%2C2059188"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-75/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-76/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-79/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74990",
"datePublished": "2026-08-18T12:23:35.129Z",
"dateReserved": "2026-08-17T11:59:24.147Z",
"dateUpdated": "2026-08-18T19:28:52.918Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-74989 (GCVE-0-2026-74989)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird 154
Summary
Internally found bugs present in Thunderbird 153. 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. This vulnerability was fixed in Firefox 154 and Thunderbird 154.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
154 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
154 , ≤ *
(rpm)
|
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Christian Holler, Ryan Hunt, Tom Ritter and the Mozilla Fuzzing Team"
}
],
"descriptions": [
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"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
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}
],
"value": "Internally found bugs present in Thunderbird 153. 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. This vulnerability was fixed in Firefox 154 and Thunderbird 154."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:48.793Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
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"references": [
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"name": "Low Severity internally found bugs fixed in Thunderbird 154",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2022257%2C2027351%2C2027380%2C2029289"
},
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"name": "Moderate Severity internally found bugs fixed in Thunderbird 154",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2027388%2C2029750%2C2029794%2C2043298%2C2045126%2C2049810%2C2051741"
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{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
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{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
}
],
"title": "Internally found bugs fixed in Thunderbird 154"
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},
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"dateUpdated": "2026-08-18T18:55:48.793Z",
"state": "PUBLISHED"
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"dataVersion": "5.2"
}
CVE-2026-74988 (GCVE-0-2026-74988)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird ESR 153.1 and Thunderbird 154
Summary
Internally found bugs present in Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
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},
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"status": "unaffected",
"version": "154",
"versionType": "rpm"
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]
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],
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"lang": "en",
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}
],
"value": "Internally found bugs present in Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"providerMetadata": {
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},
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"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045796%2C2046734%2C2051424%2C2054721%2C2057994%2C2058094%2C2058611%2C2058615%2C2058616%2C2061315"
},
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"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
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}
],
"title": "Internally found bugs fixed in Thunderbird ESR 153.1 and Thunderbird 154"
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"dataVersion": "5.2"
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CVE-2026-74987 (GCVE-0-2026-74987)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154
Summary
Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Nicolas Silva, Tom Ritter and the Mozilla Fuzzing Team"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
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"base64": false,
"type": "text/html",
"value": "Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"value": "Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. 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. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:24.240Z",
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{
"name": "Moderate Severity internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1500946%2C1788109%2C2045379%2C2045380%2C2049339%2C2049393%2C2053580%2C2054662%2C2054665%2C2054673%2C2054785%2C2058645"
},
{
"name": "High Severity internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2048797%2C2050536%2C2053272%2C2053579%2C2057115%2C2057116%2C2057130%2C2057991%2C2057995%2C2058002%2C2058008%2C2058032%2C2058102%2C2058667"
},
{
"name": "Low Severity internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2059424"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-76/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-79/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74987",
"datePublished": "2026-08-18T12:23:34.847Z",
"dateReserved": "2026-08-17T11:59:22.495Z",
"dateUpdated": "2026-08-18T18:55:24.240Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-74986 (GCVE-0-2026-74986)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Site isolation issue in the CSS Parsing and Computation component
Summary
Site isolation issue in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "5up3rh3i"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Site isolation issue in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"value": "Site isolation issue in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:46.878Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2060048"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Site isolation issue in the CSS Parsing and Computation component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74986",
"datePublished": "2026-08-18T12:23:41.380Z",
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"state": "PUBLISHED"
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CVE-2026-74985 (GCVE-0-2026-74985)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Privilege escalation in the Enterprise Policies component
Summary
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "The Mozilla Fuzzing Team"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"value": "Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:45.891Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2059825"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Privilege escalation in the Enterprise Policies component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74985",
"datePublished": "2026-08-18T12:23:41.159Z",
"dateReserved": "2026-08-17T11:59:18.049Z",
"dateUpdated": "2026-08-18T18:55:45.891Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-74984 (GCVE-0-2026-74984)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Race condition in the JavaScript Engine component
Summary
Race condition in the JavaScript Engine component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Amy Burnett of OpenAI"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Race condition in the JavaScript Engine component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"value": "Race condition in the JavaScript Engine component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:44.935Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2053670"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Race condition in the JavaScript Engine component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74984",
"datePublished": "2026-08-18T12:23:40.894Z",
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"dateUpdated": "2026-08-18T18:55:44.935Z",
"state": "PUBLISHED"
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}
CVE-2026-74983 (GCVE-0-2026-74983)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Mitigation bypass in the Data Loss Prevention component
Summary
Mitigation bypass in the Data Loss Prevention component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "5up3rh3i"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Mitigation bypass in the Data Loss Prevention component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"value": "Mitigation bypass in the Data Loss Prevention component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:23.222Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2051897"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-76/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-79/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Mitigation bypass in the Data Loss Prevention component"
}
},
"cveMetadata": {
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"assignerShortName": "mozilla",
"cveId": "CVE-2026-74983",
"datePublished": "2026-08-18T12:23:34.590Z",
"dateReserved": "2026-08-17T11:59:12.499Z",
"dateUpdated": "2026-08-18T18:55:23.222Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-74982 (GCVE-0-2026-74982)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Denial-of-service in the Widget component
Summary
Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Riski Muhammad Ivan"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"value": "Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:43.947Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2051788"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Denial-of-service in the Widget component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74982",
"datePublished": "2026-08-18T12:23:40.658Z",
"dateReserved": "2026-08-17T11:59:10.459Z",
"dateUpdated": "2026-08-18T18:55:43.947Z",
"state": "PUBLISHED"
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"dataVersion": "5.2"
}
CVE-2026-74981 (GCVE-0-2026-74981)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Site isolation issue in the Audio/Video: Web Codecs component
Summary
Site isolation issue in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "5up3rh3i"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Site isolation issue in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"value": "Site isolation issue in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:42.990Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2050480"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-80/"
}
],
"title": "Site isolation issue in the Audio/Video: Web Codecs component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74981",
"datePublished": "2026-08-18T12:23:40.437Z",
"dateReserved": "2026-08-17T11:59:08.402Z",
"dateUpdated": "2026-08-18T18:55:42.990Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-74980 (GCVE-0-2026-74980)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 12:23
VLAI
EPSS
VEX
Title
Clickjacking issue in the Downloads component in Firefox for Android
Summary
Clickjacking issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 154.
Severity
No CVSS data available.
Assigner
References
{
"containers": {
"cna": {
"affected": [
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CVE-2026-74979 (GCVE-0-2026-74979)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Mitigation bypass in the Add-ons Manager component
Summary
Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 18:54 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74978 (GCVE-0-2026-74978)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:57
VLAI
EPSS
VEX
Title
Clickjacking issue in the Widget component
Summary
Clickjacking issue in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 18:57 UTC
CWE
- CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74977 (GCVE-0-2026-74977)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:59
VLAI
EPSS
VEX
Title
Integer overflow in the Graphics component
Summary
Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 18:59 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74976 (GCVE-0-2026-74976)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
JIT miscompilation in the JavaScript Engine: JIT component
Summary
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74975 (GCVE-0-2026-74975)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 14:48
VLAI
EPSS
VEX
Title
Spoofing issue in the Downloads component in Firefox for Android
Summary
Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 154.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 14:48 UTC
CWE
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
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CVE-2026-74974 (GCVE-0-2026-74974)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:24
VLAI
EPSS
VEX
Title
Same-origin policy bypass in the Graphics: ImageLib component
Summary
Same-origin policy bypass in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:24 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.39 , ≤ 115.*
(rpm)
Unaffected: 140.14 , ≤ 140.* (rpm) Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74973 (GCVE-0-2026-74973)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Race condition, use-after-free in the Graphics component
Summary
Race condition, use-after-free in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
4.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:37 UTC
CWE
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.39 , ≤ 115.*
(rpm)
Unaffected: 140.14 , ≤ 140.* (rpm) Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74972 (GCVE-0-2026-74972)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:23
VLAI
EPSS
VEX
Title
Information disclosure in the DOM: Push Subscriptions component
Summary
Information disclosure in the DOM: Push Subscriptions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:22 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74971 (GCVE-0-2026-74971)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:22
VLAI
EPSS
VEX
Title
Information disclosure in the DOM: UI Events & Focus Handling component
Summary
Information disclosure in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:22 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
{
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CVE-2026-74970 (GCVE-0-2026-74970)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Site isolation issue in the Graphics component
Summary
Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:40 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74969 (GCVE-0-2026-74969)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Use-after-free in the Layout: Text and Fonts component
Summary
Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.39 , ≤ 115.*
(rpm)
Unaffected: 140.14 , ≤ 140.* (rpm) Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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"vendor": "Mozilla",
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CVE-2026-74968 (GCVE-0-2026-74968)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Site isolation issue in the Graphics: WebRender component
Summary
Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:13 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74967 (GCVE-0-2026-74967)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:24
VLAI
EPSS
VEX
Title
Same-origin policy bypass in the Audio/Video: Playback component
Summary
Same-origin policy bypass in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:23 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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"vendor": "Mozilla",
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"lessThanOrEqual": "140.*",
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"datePublished": "2026-08-18T12:23:32.866Z",
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CVE-2026-74966 (GCVE-0-2026-74966)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Information disclosure in the Form Autofill component
Summary
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.1 , ≤ 153.*
(rpm)
Unaffected: 154 , ≤ * (rpm) |
{
"containers": {
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
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"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
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CVE-2026-74965 (GCVE-0-2026-74965)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Privilege escalation in the Shell Integration component
Summary
Privilege escalation in the Shell Integration component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:36 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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CVE-2026-74964 (GCVE-0-2026-74964)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Integer overflow in the Graphics component
Summary
Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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"versionType": "rpm"
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CVE-2026-74963 (GCVE-0-2026-74963)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 19:23
VLAI
EPSS
VEX
Title
Same-origin policy bypass in the Networking: Cookies component
Summary
Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:23 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
{
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"integrityImpact": "LOW",
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CVE-2026-74962 (GCVE-0-2026-74962)
Vulnerability from nvd – Published: 2026-08-18 12:23 – Updated: 2026-08-18 18:55
VLAI
EPSS
VEX
Title
Site isolation issue in the Networking: Cookies component
Summary
Site isolation issue in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.14 , ≤ 140.*
(rpm)
Unaffected: 153.1 , ≤ 153.* (rpm) Unaffected: 154 , ≤ * (rpm) |
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"product": "Firefox",
"vendor": "Mozilla",
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"version": "140.14",
"versionType": "rpm"
},
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"version": "153.1",
"versionType": "rpm"
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"vendor": "Mozilla",
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"version": "153.1",
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"versionType": "rpm"
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