CVE-2026-16354
Received Received - Intake

Information Disclosure in Firefox ImageLib

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16354
EUVD
EUVD-2026-46199

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox 153
mozilla firefox_esr 115.38
mozilla firefox_esr 140.13

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is an information disclosure vulnerability in Firefox's Graphics: ImageLib component. It was patched in Firefox 153 and specific Firefox ESR versions (115.38 and 140.13). The issue allowed unauthorized access to sensitive data through the affected component.

Detection Guidance

This vulnerability is fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. To detect it, check your installed Firefox version using commands like 'firefox --version' or 'apt show firefox' (Linux) or 'about:support' in Firefox. If your version is below these thresholds, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow attackers to access confidential or sensitive information processed by the Graphics: ImageLib component in Firefox. Users running unpatched versions may have their data exposed.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR or HIPAA if it results in unauthorized data exposure. Organizations must ensure patched versions are deployed to maintain regulatory compliance and protect user data.

Mitigation Strategies

Update Firefox to version 153 or later, Firefox ESR to version 115.38 or later, or Firefox ESR to version 140.13 or later to address the information disclosure vulnerability in the Graphics: ImageLib component.

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