CVE-2026-2797

Description

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

PUBLISHED Reserved 2026-02-19 | Published 2026-02-24 | Updated 2026-04-13 | Assigner mozilla

Product status

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

References

bugzilla.mozilla.org/show_bug.cgi?id=2013561

www.mozilla.org/security/advisories/mfsa2026-13/

www.mozilla.org/security/advisories/mfsa2026-16/

cve.org (CVE-2026-2797)

nvd.nist.gov (CVE-2026-2797)

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