Description
Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox
147 to ≤ *unaffected
Mozilla Thunderbird
147 to ≤ *unaffected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2005845 ↗
- https://www.mozilla.org/security/advisories/mfsa2026-01/ ↗
- https://www.mozilla.org/security/advisories/mfsa2026-04/ ↗
- https://access.redhat.com/security/cve/CVE-2026-0881 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2428970 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0881.json ↗