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CVE-2026-8401

CRITICAL CVSS: 9.8 Published: 2026-05-12 Modified: 2026-07-15

Description

Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

Affected Platforms

Mozilla Firefox

Weakness Type

CWE-693, CWE-653

References