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alsa-2026:21382
Vulnerability from osv_almalinux
Published
2026-05-27 00:00
Modified
2026-05-29 12:37
Summary
Important: firefox security update
Details
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.
Security Fix(es):
- firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-8388)
- firefox: Other issue in the JavaScript Engine component (CVE-2026-8391)
- firefox: Sandbox escape in the Profile Backup component (CVE-2026-8401)
- firefox: Integer overflow in the Networking: JAR component (CVE-2026-8956)
- firefox: Memory safety bugs fixed in Firefox ESR 115.36, Firefox ESR 140.11 and Firefox 151 (CVE-2026-8975)
- firefox: Privilege escalation in the DOM: Workers component (CVE-2026-8955)
- firefox: Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component (CVE-2026-8968)
- firefox: Incorrect boundary conditions, integer overflow in the Audio/Video component (CVE-2026-8954)
- firefox: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-8958)
- firefox: Incorrect boundary conditions in the Audio/Video: Web Codecs component (CVE-2026-8946)
- firefox: Privilege escalation in the Security component (CVE-2026-8970)
- firefox: Same-origin policy bypass in the Networking: HTTP component (CVE-2026-8950)
- firefox: Memory safety bugs fixed in Firefox ESR 140.11 and Firefox 151 (CVE-2026-8974)
- firefox: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-8953)
- firefox: Spoofing issue in the Form Autofill component (CVE-2026-8961)
- firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-8947)
- firefox: Mitigation bypass in the DOM: Security component (CVE-2026-8962)
- firefox: Privilege escalation in the Enterprise Policies component (CVE-2026-8957)
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.
References
{
"affected": [
{
"package": {
"ecosystem": "AlmaLinux:8",
"name": "firefox"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "140.11.0-1.el8_10.alma.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"details": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. \n\nSecurity Fix(es): \n\n * firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-8388)\n * firefox: Other issue in the JavaScript Engine component (CVE-2026-8391)\n * firefox: Sandbox escape in the Profile Backup component (CVE-2026-8401)\n * firefox: Integer overflow in the Networking: JAR component (CVE-2026-8956)\n * firefox: Memory safety bugs fixed in Firefox ESR 115.36, Firefox ESR 140.11 and Firefox 151 (CVE-2026-8975)\n * firefox: Privilege escalation in the DOM: Workers component (CVE-2026-8955)\n * firefox: Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component (CVE-2026-8968)\n * firefox: Incorrect boundary conditions, integer overflow in the Audio/Video component (CVE-2026-8954)\n * firefox: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-8958)\n * firefox: Incorrect boundary conditions in the Audio/Video: Web Codecs component (CVE-2026-8946)\n * firefox: Privilege escalation in the Security component (CVE-2026-8970)\n * firefox: Same-origin policy bypass in the Networking: HTTP component (CVE-2026-8950)\n * firefox: Memory safety bugs fixed in Firefox ESR 140.11 and Firefox 151 (CVE-2026-8974)\n * firefox: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-8953)\n * firefox: Spoofing issue in the Form Autofill component (CVE-2026-8961)\n * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-8947)\n * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-8962)\n * firefox: Privilege escalation in the Enterprise Policies component (CVE-2026-8957)\n\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.\n",
"id": "ALSA-2026:21382",
"modified": "2026-05-29T12:37:43Z",
"published": "2026-05-27T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:21382"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8388"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8391"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8401"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8946"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8947"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8950"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8953"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8954"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8955"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8956"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8957"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8958"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8961"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8962"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8968"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8970"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8974"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-8975"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2476469"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2476475"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2476492"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479839"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479840"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479842"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479846"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479847"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479848"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479849"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479852"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479853"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479855"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479860"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479871"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479873"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479876"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2479880"
},
{
"type": "ADVISORY",
"url": "https://errata.almalinux.org/8/ALSA-2026-21382.html"
}
],
"related": [
"CVE-2026-8388",
"CVE-2026-8391",
"CVE-2026-8401",
"CVE-2026-8956",
"CVE-2026-8975",
"CVE-2026-8955",
"CVE-2026-8968",
"CVE-2026-8954",
"CVE-2026-8958",
"CVE-2026-8946",
"CVE-2026-8970",
"CVE-2026-8950",
"CVE-2026-8974",
"CVE-2026-8953",
"CVE-2026-8961",
"CVE-2026-8947",
"CVE-2026-8962",
"CVE-2026-8957"
],
"summary": "Important: firefox security update"
}
CVE-2026-8388 (GCVE-0-2026-8388)
Vulnerability from cvelistv5 – Published: 2026-05-12 12:36 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Incorrect boundary conditions in the JavaScript Engine: JIT component
Summary
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
Severity
6.5 (Medium)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 150.0.3 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ *
(rpm)
|
Credits
ggwhyp
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
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"timestamp": "2026-05-12T18:28:57.252588Z",
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
}
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"product": "Firefox",
"vendor": "Mozilla",
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"lessThanOrEqual": "115.*",
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"version": "140.11",
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},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-47/"
},
{
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"title": "Incorrect boundary conditions in the JavaScript Engine: JIT component"
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}
CVE-2026-8391 (GCVE-0-2026-8391)
Vulnerability from cvelistv5 – Published: 2026-05-12 12:36 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Other issue in the JavaScript Engine component
Summary
Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
Severity
5.3 (Medium)
CWE
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 150.0.3 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ *
(rpm)
|
Credits
ggwhyp
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
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{
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}
],
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"timestamp": "2026-05-13T15:47:19.047188Z",
"version": "2.0.3"
},
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}
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"descriptions": [
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"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
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"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
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{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
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"status": "unaffected",
"version": "115.36",
"versionType": "rpm"
},
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.11",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "150.0.3",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
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"status": "unaffected",
"version": "140.11",
"versionType": "rpm"
}
]
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],
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{
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"value": "ggwhyp"
}
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"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11."
}
],
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}
],
"providerMetadata": {
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"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
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"url": "https://www.mozilla.org/security/advisories/mfsa2026-45/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-47/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-48/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-51/"
}
],
"title": "Other issue in the JavaScript Engine component"
}
},
"cveMetadata": {
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"datePublished": "2026-05-12T12:36:15.548Z",
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"dateUpdated": "2026-05-19T17:10:47.079Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-8401 (GCVE-0-2026-8401)
Vulnerability from cvelistv5 – Published: 2026-05-12 14:24 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Sandbox escape in the Profile Backup component
Summary
Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
Severity
9.8 (Critical)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 150.0.3 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ *
(rpm)
|
Credits
ggwhyp
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-8401",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-14T16:46:22.547730Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
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{
"cweId": "CWE-693",
"description": "CWE-693 Protection Mechanism Failure",
"lang": "en",
"type": "CWE"
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]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-14T19:54:10.869Z",
"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": "115.36",
"versionType": "rpm"
},
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.11",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "150.0.3",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "140.11",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "ggwhyp"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11."
}
],
"value": "Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11."
}
],
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CVE-2026-8946 (GCVE-0-2026-8946)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Incorrect boundary conditions in the Audio/Video: Web Codecs component
Summary
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2029070 | |
| 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:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
zx
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CVE-2026-8947 (GCVE-0-2026-8947)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Use-after-free in the DOM: Bindings (WebIDL) component
Summary
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.3 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2038439 | |
| 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:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
Satoki Tsuji
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CVE-2026-8950 (GCVE-0-2026-8950)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Same-origin policy bypass in the Networking: HTTP component
Summary
Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.3 (Critical)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
Jakub Szymsza
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CVE-2026-8953 (GCVE-0-2026-8953)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Sandbox escape due to use-after-free in the Disability Access APIs component
Summary
Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.6 (Critical)
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2029511 | |
| 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:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
stevej
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CVE-2026-8954 (GCVE-0-2026-8954)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Incorrect boundary conditions, integer overflow in the Audio/Video component
Summary
Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
Ameen Basha M K
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CVE-2026-8955 (GCVE-0-2026-8955)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-20 15:37
VLAI
EPSS
Title
Privilege escalation in the DOM: Workers component
Summary
Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
lebr0nli
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CVE-2026-8956 (GCVE-0-2026-8956)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Integer overflow in the Networking: JAR component
Summary
Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.8 (Critical)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
Yaqoub Aldurayhim
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Loading…
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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