CVEvulnerability
CVE-2026-0881
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2026-01-13
- Last modified
- 2026-07-15
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-284, CWE-693
Description
Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
Affected configurations
• mozilla firefox (< 147.0)
• mozilla thunderbird (< 147.0)
Related
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2005845 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-04/ Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-0881 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2428970 bugzilla.redhat.com
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0881.json security.access.redhat.com