CVE-2026-6774 PUBLISHED

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

• lebr0nli

• https://bugzilla.mozilla.org/show_bug.cgi?id=2016915
• https://www.mozilla.org/security/advisories/mfsa2026-30/
• https://www.mozilla.org/security/advisories/mfsa2026-33/