critical9.8
CVE-2026-2797
Use-after-free in the JavaScript: GC component.
Impact
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 148.0 |
| Mozilla | Thunderbird | before 148.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.mozilla.org/show_bug.cgi?id=2013561
- https://www.mozilla.org/security/advisories/mfsa2026-13/
- https://www.mozilla.org/security/advisories/mfsa2026-16/
- https://access.redhat.com/security/cve/CVE-2026-2797
- https://bugzilla.redhat.com/show_bug.cgi?id=2442330
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2797.json