CVE-2026-84134 PUBLISHED

Other issue in the Profile Backup component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.

• 5up3rh3i

• https://bugzilla.mozilla.org/show_bug.cgi?id=2044882
• https://www.mozilla.org/security/advisories/mfsa2026-82/
• https://www.mozilla.org/security/advisories/mfsa2026-85/