Use-after-free in the JavaScript: GC component
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.3%
exploitation probability
0.3%top 75% of all CVEs
observed exploitation
nono source reports it
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
https://access.redhat.com/security/cve/CVE-2026-2797https://bugzilla.mozilla.org/show_bug.cgi?id=2013561https://bugzilla.redhat.com/show_bug.cgi?id=2442330https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2797.jsonhttps://www.mozilla.org/security/advisories/mfsa2026-13/https://www.mozilla.org/security/advisories/mfsa2026-16/