CVE-2026-16354: Vulnerability in Mozilla Firefox
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.
AI Analysis
Technical Summary
CVE-2026-16354 is an information disclosure vulnerability affecting the Graphics: ImageLib component in Mozilla Firefox. The flaw allows potential unauthorized access to information handled by this component. Mozilla fixed this vulnerability in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. The vendor advisory classifies the impact as high. No CVSS score is provided. No public exploitation in the wild is reported. The vulnerability is part of a set of security issues resolved in these Firefox releases.
Potential Impact
The vulnerability could lead to unauthorized disclosure of information processed by the Graphics: ImageLib component in Firefox. This may expose sensitive data to an attacker. The vendor rates the impact as high. There are no reports of active exploitation in the wild. The issue affects confidentiality but does not indicate direct code execution or privilege escalation.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-16354: Vulnerability in Mozilla Firefox
Description
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.
Affected software
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
CVE-2026-16354 is an information disclosure vulnerability affecting the Graphics: ImageLib component in Mozilla Firefox. The flaw allows potential unauthorized access to information handled by this component. Mozilla fixed this vulnerability in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. The vendor advisory classifies the impact as high. No CVSS score is provided. No public exploitation in the wild is reported. The vulnerability is part of a set of security issues resolved in these Firefox releases.
Potential Impact
The vulnerability could lead to unauthorized disclosure of information processed by the Graphics: ImageLib component in Firefox. This may expose sensitive data to an attacker. The vendor rates the impact as high. There are no reports of active exploitation in the wild. The issue affects confidentiality but does not indicate direct code execution or privilege escalation.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:55:56.965Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-69/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-70/","vendor":"Mozilla"}]
Threat ID: 6a5f6cb92a4a8d5989262420
Added to database: 07/21/2026, 12:57:29 UTC
Last enriched: 07/21/2026, 13:43:39 UTC
Last updated: 07/21/2026, 22:51:54 UTC
Views: 5
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