CVE-2026-92031: Vulnerability in Mozilla Firefox
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-92031 affects the Graphics: ImageLib component in Mozilla Firefox, leading to information disclosure. Mozilla fixed this vulnerability in Firefox 156 and the corresponding ESR versions 140.16 and 153.3. The vendor advisory classifies the impact as moderate and confirms the availability of an official fix. There is no CVSS score provided, and no active exploitation has been reported.
Potential Impact
The vulnerability results in unauthorized information disclosure within the Graphics: ImageLib component. This could potentially expose sensitive data processed or handled by this component. However, the impact is rated moderate by Mozilla, and there is no indication of further exploitation such as privilege escalation or remote code execution.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3. Users and administrators should update to these versions or later to remediate the issue. Since the vulnerability is fixed, no additional mitigation steps are required beyond applying the update.
CVE-2026-92031: Vulnerability in Mozilla Firefox
Description
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-92031 affects the Graphics: ImageLib component in Mozilla Firefox, leading to information disclosure. Mozilla fixed this vulnerability in Firefox 156 and the corresponding ESR versions 140.16 and 153.3. The vendor advisory classifies the impact as moderate and confirms the availability of an official fix. There is no CVSS score provided, and no active exploitation has been reported.
Potential Impact
The vulnerability results in unauthorized information disclosure within the Graphics: ImageLib component. This could potentially expose sensitive data processed or handled by this component. However, the impact is rated moderate by Mozilla, and there is no indication of further exploitation such as privilege escalation or remote code execution.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3. Users and administrators should update to these versions or later to remediate the issue. Since the vulnerability is fixed, no additional mitigation steps are required beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:33:51.409Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-92/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","vendor":"Mozilla"}]
Threat ID: 6aa93e6255bf5e2cf5d30fea
Added to database: 09/15/2026, 12:47:30 UTC
Last enriched: 09/15/2026, 13:31:38 UTC
Last updated: 09/16/2026, 04:01:24 UTC
Views: 7
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