VULNERABILITY INTELLIGENCE

CVE-2026-0881

CVSS score10 CRITICAL

EPSS probability0.35%

CISA KEVNot currently listed

Published2026-01-13

Last modified2026-07-15

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Description

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.