Sandbox escape in the Responsive Design Mode component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.
References 4
https://bugzilla.mozilla.org/show_bug.cgi?id=2017643
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-20/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-21/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-22/
security@mozilla.org