CVE-2026-109755

CRITICALCVSS 9.6

Description

Sandbox escape in the DOM: Content Processes component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

Timeline

Published:October 13th, 2026 1:17 PM

Last modified:October 15th, 2026 8:17 PM

CVSS Scoring

CVSS v3: 9.6 (CRITICAL)

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

Weaknesses (CWE)

References & Reports

Advisories, patches, and third-party reports

Source: NIST NVD · Data may lag official sources by up to one minute