Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148 and Thunderbird < 148.Creditsx0eReferenceshttps://bugzilla.mozilla.org/show_bug.cgi?id=2010940https://www.mozilla.org/security/advisories/mfsa2026-13/https://www.mozilla.org/security/advisories/mfsa2026-16/