CRITICALCVE-2026-0881Published Modified CNA mozilla
CVE-2026-0881: Sandbox escape in the Messaging System component
Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
Metrics
- CVSS v3.1
- 10.0
- Severity
- CRITICAL
- Fixed in
- 147
- Affected Products
- 2
Fix available
147
Affected packages
- Mozilla / FirefoxFixed in 147
- Mozilla / ThunderbirdFixed in 147
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H