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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-8401

Sandbox escape in the Profile Backup component

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 products

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

Mozilla Firefox

  • 115.36 to ≤ 115.*unaffected
  • 140.11 to ≤ 140.*unaffected
  • 150.0.3 to ≤ *unaffected

Mozilla Thunderbird

  • 140.11 to ≤ *unaffected

References