CVE-2026-96869: Vulnerability in Mozilla Firefox
Information disclosure in the Networking component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
AI Analysis
Technical Summary
This vulnerability involves information disclosure within the Networking component of Mozilla Firefox. The issue was resolved by Mozilla in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17. The Mozilla advisory confirms the fix and categorizes the impact as high. No active exploitation in the wild is reported. The advisory is part of a broader security update addressing multiple high-impact vulnerabilities.
Potential Impact
The vulnerability could lead to unauthorized disclosure of information via the networking component, which may compromise user privacy or security. The impact is rated high by Mozilla, indicating significant risk if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Mozilla has released official fixes in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17. Users and administrators should update affected Firefox installations to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-96869: Vulnerability in Mozilla Firefox
Description
Information disclosure in the Networking component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
CVSS v3.1
Score 4.3medium
Affected software
Mozilla
Firefox
pkg:github/mozilla/firefoxRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves information disclosure within the Networking component of Mozilla Firefox. The issue was resolved by Mozilla in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17. The Mozilla advisory confirms the fix and categorizes the impact as high. No active exploitation in the wild is reported. The advisory is part of a broader security update addressing multiple high-impact vulnerabilities.
Potential Impact
The vulnerability could lead to unauthorized disclosure of information via the networking component, which may compromise user privacy or security. The impact is rated high by Mozilla, indicating significant risk if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Mozilla has released official fixes in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17. Users and administrators should update affected Firefox installations to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-23T18:05:43.142Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-99/","vendor":"Mozilla"}]
Threat ID: 6abbb3f9f7a7c541066409d0
Added to database: 09/29/2026, 12:50:01 UTC
Last enriched: 09/29/2026, 13:02:41 UTC
Last updated: 09/29/2026, 18:20:12 UTC
Views: 11
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