CVE-2026-6771

· NIST NVD ↗

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

CRITICAL
CVSS severity
9.8
CVSS base score
2026-04-21
Published

CWE codes

CWE-288

Affected products

mozilla:firefoxmozilla:thunderbird

Sources