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rlsa-2026:65160
Vulnerability from osv_rocky
Published
2026-09-09 06:01
Modified
2026-09-13 12:12
Summary
Important: thunderbird security update
Details
Mozilla Thunderbird is a standalone mail and newsgroup client.
Security Fix(es):
-
firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL component (CVE-2026-74934)
-
firefox: thunderbird: Privilege escalation in the Networking: Cookies component (CVE-2026-74953)
-
firefox: thunderbird: Internally found bugs fixed in Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154 (CVE-2026-74987)
-
firefox: thunderbird: Information disclosure in the Graphics component (CVE-2026-74948)
-
firefox: thunderbird: Information disclosure in the DOM: UI Events & Focus Handling component (CVE-2026-74971)
-
firefox: thunderbird: Privilege escalation in the Graphics: CanvasWebGL component (CVE-2026-74941)
-
firefox: Privilege escalation in the Shell Integration component (CVE-2026-74965)
-
firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-74946)
-
firefox: Race condition, use-after-free in the Graphics component (CVE-2026-74973)
-
firefox: thunderbird: Internally found bugs fixed in Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154 (CVE-2026-74990)
-
firefox: thunderbird: Use-after-free in the Graphics: Text component (CVE-2026-74940)
-
firefox: thunderbird: Site isolation issue in the WebExtensions component (CVE-2026-74960)
-
firefox: thunderbird: Mitigation bypass in the Storage: Cache API component (CVE-2026-74959)
-
firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-74976)
-
firefox: thunderbird: Same-origin policy bypass in the Graphics: ImageLib component (CVE-2026-74974)
-
firefox: thunderbird: Mitigation bypass in the Safe Browsing component (CVE-2026-74957)
-
firefox: thunderbird: Same-origin policy bypass in the Audio/Video: Playback component (CVE-2026-74967)
-
firefox: Privilege escalation in the Remote Settings Client component (CVE-2026-74942)
-
firefox: thunderbird: Privilege escalation in the DOM: Navigation component (CVE-2026-74939)
-
firefox: thunderbird: Information disclosure in the DOM: Push Subscriptions component (CVE-2026-74972)
-
firefox: thunderbird: Information disclosure in the Graphics: Text component (CVE-2026-74945)
-
firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-74963)
-
firefox: Integer overflow in the Graphics component (CVE-2026-74964)
-
firefox: Site isolation issue in the Networking: Cookies component (CVE-2026-74962)
-
firefox: thunderbird: Privilege escalation in the DOM: Networking component (CVE-2026-74935)
For 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.
Severity
7.5 (High)
References
{
"affected": [
{
"package": {
"ecosystem": "Rocky Linux:8",
"name": "thunderbird",
"purl": "pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-8\u0026epoch=0"
},
"ranges": [
{
"database_specific": {
"yum_repository": "AppStream"
},
"events": [
{
"introduced": "0"
},
{
"fixed": "0:140.14.0-1.el8_10"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [
{
"name": "Rocky Enterprise Software Foundation"
},
{
"name": "Red Hat"
}
],
"database_specific": {
"license": "CC-BY-4.0",
"license_url": "https://creativecommons.org/licenses/by/4.0/",
"source_advisory": "RHSA-2026:65160"
},
"details": "Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nSecurity Fix(es):\n\n* firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL component (CVE-2026-74934)\n\n* firefox: thunderbird: Privilege escalation in the Networking: Cookies component (CVE-2026-74953)\n\n* firefox: thunderbird: Internally found bugs fixed in Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154 (CVE-2026-74987)\n\n* firefox: thunderbird: Information disclosure in the Graphics component (CVE-2026-74948)\n\n* firefox: thunderbird: Information disclosure in the DOM: UI Events \u0026 Focus Handling component (CVE-2026-74971)\n\n* firefox: thunderbird: Privilege escalation in the Graphics: CanvasWebGL component (CVE-2026-74941)\n\n* firefox: Privilege escalation in the Shell Integration component (CVE-2026-74965)\n\n* firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-74946)\n\n* firefox: Race condition, use-after-free in the Graphics component (CVE-2026-74973)\n\n* firefox: thunderbird: Internally found bugs fixed in Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154 (CVE-2026-74990)\n\n* firefox: thunderbird: Use-after-free in the Graphics: Text component (CVE-2026-74940)\n\n* firefox: thunderbird: Site isolation issue in the WebExtensions component (CVE-2026-74960)\n\n* firefox: thunderbird: Mitigation bypass in the Storage: Cache API component (CVE-2026-74959)\n\n* firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-74976)\n\n* firefox: thunderbird: Same-origin policy bypass in the Graphics: ImageLib component (CVE-2026-74974)\n\n* firefox: thunderbird: Mitigation bypass in the Safe Browsing component (CVE-2026-74957)\n\n* firefox: thunderbird: Same-origin policy bypass in the Audio/Video: Playback component (CVE-2026-74967)\n\n* firefox: Privilege escalation in the Remote Settings Client component (CVE-2026-74942)\n\n* firefox: thunderbird: Privilege escalation in the DOM: Navigation component (CVE-2026-74939)\n\n* firefox: thunderbird: Information disclosure in the DOM: Push Subscriptions component (CVE-2026-74972)\n\n* firefox: thunderbird: Information disclosure in the Graphics: Text component (CVE-2026-74945)\n\n* firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-74963)\n\n* firefox: Integer overflow in the Graphics component (CVE-2026-74964)\n\n* firefox: Site isolation issue in the Networking: Cookies component (CVE-2026-74962)\n\n* firefox: thunderbird: Privilege escalation in the DOM: Networking component (CVE-2026-74935)\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.",
"id": "RLSA-2026:65160",
"modified": "2026-09-13T12:12:51.505807Z",
"published": "2026-09-09T06:01:32.269149Z",
"references": [
{
"type": "ADVISORY",
"url": "https://errata.rockylinux.org/RLSA-2026:65160"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517820"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517822"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517823"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517825"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517831"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517833"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517834"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517835"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517836"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517839"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517841"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517845"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517849"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517851"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517853"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517856"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517858"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517859"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517860"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517862"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517863"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517866"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517870"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517872"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517874"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:65160"
}
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Important: thunderbird security update",
"upstream": [
"CVE-2026-74934",
"CVE-2026-74935",
"CVE-2026-74939",
"CVE-2026-74940",
"CVE-2026-74941",
"CVE-2026-74942",
"CVE-2026-74945",
"CVE-2026-74946",
"CVE-2026-74948",
"CVE-2026-74953",
"CVE-2026-74957",
"CVE-2026-74959",
"CVE-2026-74960",
"CVE-2026-74962",
"CVE-2026-74963",
"CVE-2026-74964",
"CVE-2026-74965",
"CVE-2026-74967",
"CVE-2026-74971",
"CVE-2026-74972",
"CVE-2026-74973",
"CVE-2026-74974",
"CVE-2026-74976",
"CVE-2026-74987",
"CVE-2026-74990"
]
}
CVE-2026-74957 (GCVE-0-2026-74957)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-21 20:05
VLAI
EPSS
VEX
Title
Mitigation bypass in the Safe Browsing component
Summary
Mitigation bypass in the Safe Browsing 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
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 20:04 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2041906 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"scope": "UNCHANGED",
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}
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"timestamp": "2026-08-21T20:04:46.368245Z",
"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.14",
"versionType": "rpm"
},
{
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"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"
},
{
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"status": "unaffected",
"version": "153.1",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "154",
"versionType": "rpm"
}
]
}
],
"credits": [
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"value": "Tomoya Nakanishi"
}
],
"descriptions": [
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"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
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}
],
"value": "Mitigation bypass in the Safe Browsing 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": {
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"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2041906"
},
{
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},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-76/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"
},
{
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},
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{
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}
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"datePublished": "2026-08-18T12:23:31.078Z",
"dateReserved": "2026-08-17T11:58:15.877Z",
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"state": "PUBLISHED"
},
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CVE-2026-74959 (GCVE-0-2026-74959)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-21 20:02
VLAI
EPSS
VEX
Title
Mitigation bypass in the Storage: Cache API component
Summary
Mitigation bypass in the Storage: Cache API 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
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 20:02 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2047853 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
{
"containers": {
"adp": [
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
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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:N",
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}
},
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{
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}
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"timestamp": "2026-08-21T20:02:26.698552Z",
"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
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"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": [
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}
],
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{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Mitigation bypass in the Storage: Cache API 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 Storage: Cache API 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": {
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},
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"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/"
}
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"title": "Mitigation bypass in the Storage: Cache API component"
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CVE-2026-74960 (GCVE-0-2026-74960)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-21 20:00
VLAI
EPSS
VEX
Title
Site isolation issue in the WebExtensions component
Summary
Site isolation issue in the WebExtensions 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
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:59 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2049148 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74962 (GCVE-0-2026-74962)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-19 12:52
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
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 12:52 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2050425 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74963 (GCVE-0-2026-74963)
Vulnerability from cvelistv5 – 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
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2050482 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74964 (GCVE-0-2026-74964)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-19 12:55
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
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 12:55 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2053327 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74965 (GCVE-0-2026-74965)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:23 – Updated: 2026-08-21 03:55
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 2026-08-20 00:00 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2053455 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74967 (GCVE-0-2026-74967)
Vulnerability from cvelistv5 – 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
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2055697 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74971 (GCVE-0-2026-74971)
Vulnerability from cvelistv5 – 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
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2057204 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
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CVE-2026-74972 (GCVE-0-2026-74972)
Vulnerability from cvelistv5 – 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
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2059053 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… |
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) |
Credits
{
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],
"role": "CISA Coordinator",
"timestamp": "2026-08-18T19:22:45.486406Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-200",
"description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T19:23:06.783Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"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": "Kagami Rosylight"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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."
}
],
"value": "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."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T18:55:19.341Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2059053"
},
{
"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": "Information disclosure in the DOM: Push Subscriptions component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-74972",
"datePublished": "2026-08-18T12:23:33.635Z",
"dateReserved": "2026-08-17T11:58:48.433Z",
"dateUpdated": "2026-08-18T19:23:06.783Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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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.
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.
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