CVE-2026-0881
CRITICAL
10.0
Our Analysis: General-Purpose
Our model has classified this vulnerability as relevant to General-Purpose Systems, helping your team prioritize efforts effectively.
Published Date
January 13, 2026
Last Modified
January 22, 2026
CVSS Vector
CVSS: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 affects Firefox < 147 and Thunderbird < 147.