openeuler-sa-2026-3842
CRITICAL CVSS 9.6 csaf_openeuler
Description
thunderbird security update
Timeline
- Published
- 2026-09-16 17:55 UTC
- Last Modified
- 2026-09-16
CVSS Details
CVSS details not available.
Affected Products
No product information available.
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"document": {
"aggregate_severity": {
"namespace": "https://nvd.nist.gov/vuln-metrics/cvss",
"text": "Critical"
},
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https:/www.first.org/tlp/"
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"lang": "en",
"notes": [
{
"category": "general",
"text": "thunderbird security update",
"title": "Synopsis"
},
{
"category": "general",
"text": "An update for thunderbird is now available for openEuler-24.03-LTS-SP4",
"title": "Summary"
},
{
"category": "general",
"text": "Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nSecurity Fix(es):\n\nSandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84119)\n\nUse-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84120)\n\nSandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84121)\n\nUse-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84122)\n\nUse-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84124)\n\nPrivilege escalation due to invalid pointer in the Graphics component of Mozilla Firefox. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84131)\n\nInternally found bugs present in Firefox 154, Firefox ESR 153.1 and Firefox ESR 140.14. 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 155, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84143)\n\nInternally found bugs present in Firefox 154, Firefox ESR 153.1, Firefox ESR 140.14 and Firefox ESR 115.39. 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 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84145)\n\nTriggering an error condition in certain MIME bodies would cause uninitialized memory to be used. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.(CVE-2026-84639)\n\nA maliciously constructed mail header could lead to a one byte read past the end of a buffer. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.(CVE-2026-84640)\n\nA malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.(CVE-2026-84641)",
"title": "Description"
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{
"category": "general",
"text": "An update for thunderbird is now available for openEuler-24.03-LTS-SP4.\n\nopenEuler Security has rated this update as having a security impact of critical. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.",
"title": "Topic"
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"category": "general",
"text": "Critical",
"title": "Severity"
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{
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"text": "thunderbird",
"title": "Affected Component"
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"contact_details": "openeuler-security@openeuler.org",
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"name": "openEuler",
"namespace": "https://www.openeuler.org"
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{
"category": "self",
"summary": "openEuler-SA-2026-3842",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3842"
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{
"category": "self",
"summary": "CVE-2026-84119",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84119&packageName=thunderbird"
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{
"category": "self",
"summary": "CVE-2026-84120",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84120&packageName=thunderbird"
},
{
"category": "self",
"summary": "CVE-2026-84121",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84121&packageName=thunderbird"
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"category": "self",
"summary": "CVE-2026-84122",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84122&packageName=thunderbird"
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{
"category": "self",
"summary": "CVE-2026-84124",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84124&packageName=thunderbird"
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{
"category": "self",
"summary": "CVE-2026-84131",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84131&packageName=thunderbird"
},
{
"category": "self",
"summary": "CVE-2026-84143",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84143&packageName=thunderbird"
},
{
"category": "self",
"summary": "CVE-2026-84145",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84145&packageName=thunderbird"
},
{
"category": "self",
"summary": "CVE-2026-84639",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84639&packageName=thunderbird"
},
{
"category": "self",
"summary": "CVE-2026-84640",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84640&packageName=thunderbird"
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{
"category": "self",
"summary": "CVE-2026-84641",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-84641&packageName=thunderbird"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84119"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84120"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84122"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84124"
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"summary": "nvd cve",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84641"
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"category": "self",
"summary": "openEuler-SA-2026-3842 vex file",
"url": "https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-3842.json"
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"text": "Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.",
"title": "Vulnerability Description"
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}
],
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{
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}
],
"title": "CVE-2026-84640"
},
{
"cve": "CVE-2026-84641",
"notes": [
{
"category": "description",
"text": "A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.",
"title": "Vulnerability Description"
}
],
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}