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CERTFR-2026-AVI-0615
Vulnerability from certfr_avis - Published: 2026-05-20 - Updated: 2026-05-20
De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, une élévation de privilèges et un déni de service à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Mozilla | Thunderbird | Thunderbird versions antérieures à 151 | ||
| Mozilla | Firefox | Firefox versions antérieures à 151 | ||
| Mozilla | Firefox | Firefox pour iOS versions antérieures à 151.0 | ||
| Mozilla | Thunderbird | Thunderbird versions antérieures à 140.11 | ||
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 115.36 | ||
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 140.11 |
References
| Title | Publication Time | Tags | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Thunderbird versions ant\u00e9rieures \u00e0 151",
"product": {
"name": "Thunderbird",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox versions ant\u00e9rieures \u00e0 151",
"product": {
"name": "Firefox",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox pour iOS versions ant\u00e9rieures \u00e0 151.0",
"product": {
"name": "Firefox",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Thunderbird versions ant\u00e9rieures \u00e0 140.11",
"product": {
"name": "Thunderbird",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 115.36",
"product": {
"name": "Firefox ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 140.11",
"product": {
"name": "Firefox ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-8975",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8975"
},
{
"name": "CVE-2026-8961",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8961"
},
{
"name": "CVE-2026-8946",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8946"
},
{
"name": "CVE-2026-8948",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8948"
},
{
"name": "CVE-2026-8945",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8945"
},
{
"name": "CVE-2026-8958",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8958"
},
{
"name": "CVE-2026-8974",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8974"
},
{
"name": "CVE-2026-8964",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8964"
},
{
"name": "CVE-2026-8973",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8973"
},
{
"name": "CVE-2026-8954",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8954"
},
{
"name": "CVE-2026-8957",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8957"
},
{
"name": "CVE-2026-8951",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8951"
},
{
"name": "CVE-2026-8952",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8952"
},
{
"name": "CVE-2026-8706",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8706"
},
{
"name": "CVE-2026-8956",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8956"
},
{
"name": "CVE-2026-8967",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8967"
},
{
"name": "CVE-2026-8971",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8971"
},
{
"name": "CVE-2026-8953",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8953"
},
{
"name": "CVE-2026-8970",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8970"
},
{
"name": "CVE-2026-8965",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8965"
},
{
"name": "CVE-2026-8949",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8949"
},
{
"name": "CVE-2026-8972",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8972"
},
{
"name": "CVE-2026-8969",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8969"
},
{
"name": "CVE-2026-8401",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8401"
},
{
"name": "CVE-2026-8391",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8391"
},
{
"name": "CVE-2026-8962",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8962"
},
{
"name": "CVE-2026-8963",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8963"
},
{
"name": "CVE-2026-8388",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8388"
},
{
"name": "CVE-2026-8968",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8968"
},
{
"name": "CVE-2026-8966",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8966"
},
{
"name": "CVE-2026-8960",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8960"
},
{
"name": "CVE-2026-8950",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8950"
},
{
"name": "CVE-2026-8959",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8959"
},
{
"name": "CVE-2026-8947",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8947"
},
{
"name": "CVE-2026-8955",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-8955"
}
],
"initial_release_date": "2026-05-20T00:00:00",
"last_revision_date": "2026-05-20T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0615",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-05-20T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Mozilla. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire, une \u00e9l\u00e9vation de privil\u00e8ges et un d\u00e9ni de service \u00e0 distance.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Mozilla",
"vendor_advisories": [
{
"published_at": "2026-05-19",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-47",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-47/"
},
{
"published_at": "2026-05-19",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-46",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-46/"
},
{
"published_at": "2026-05-19",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-50",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-50/"
},
{
"published_at": "2026-05-19",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-48",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-48/"
},
{
"published_at": "2026-05-19",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-49",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-49/"
},
{
"published_at": "2026-05-19",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-51",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-51/"
}
]
}
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
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-8388",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-12T18:28:57.252588Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T18:29:06.860Z",
"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": "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."
}
],
"value": "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."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T17:10:46.244Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2036978"
},
{
"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": "Incorrect boundary conditions in the JavaScript Engine: JIT component"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-8388",
"datePublished": "2026-05-12T12:36:10.633Z",
"dateReserved": "2026-05-12T12:36:09.855Z",
"dateUpdated": "2026-05-19T17:10:46.244Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-8391",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-13T15:47:19.047188Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"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": [
{
"cweId": "CWE-119",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-13T15:47:30.418Z",
"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": "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."
}
],
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T17:10:47.079Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2038575"
},
{
"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": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-8391",
"datePublished": "2026-05-12T12:36:15.548Z",
"dateReserved": "2026-05-12T12:36:14.816Z",
"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": [
{
"descriptions": [
{
"cweId": "CWE-693",
"description": "CWE-693 Protection Mechanism Failure",
"lang": "en",
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CVE-2026-8706 (GCVE-0-2026-8706)
Vulnerability from cvelistv5 – Published: 2026-05-19 14:27 – Updated: 2026-05-19 17:12
VLAI
EPSS
Title
Sensitive user data could be leaked to other applications through Reader mode
Summary
Firefox for iOS hosted Reader mode on an unauthenticated local web server, allowing another application on the same device to request arbitrary URLs and receive the response rendered with the signed-in user's cookies. This vulnerability was fixed in Firefox for iOS 151.0.
Severity
6.5 (Medium)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox for iOS |
Unaffected:
151.0 , ≤ *
(rpm)
|
Credits
Muneaki Nishimura
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CVE-2026-8945 (GCVE-0-2026-8945)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 15:12
VLAI
EPSS
Title
Sandbox escape in Firefox and Firefox Focus for Android
Summary
Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.
Severity
7.5 (High)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
Credits
Daisuke Hatakeyama
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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
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
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-2026-8948 (GCVE-0-2026-8948)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Same-origin policy bypass in the DOM: Networking component
Summary
Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
9.1 (Critical)
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
satyamasd
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CVE-2026-8949 (GCVE-0-2026-8949)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
Title
Integer overflow in the Widget: Win32 component
Summary
Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
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
q1
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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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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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