CVE-2026-84134

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• 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/ ↗
• https://www.mozilla.org/security/advisories/mfsa2026-86/ ↗
• https://www.mozilla.org/security/advisories/mfsa2026-88/ ↗