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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-100831

Use-after-free in the DOM: UI Events & Focus Handling component

Description

Use-after-free in the DOM: UI Events & Focus Handling component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

Affected products

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

Mozilla Firefox

  • 153.4 to ≤ 153.*unaffected
  • 157 to ≤ *unaffected

Mozilla Thunderbird

  • 153.4 to ≤ 153.*unaffected
  • 157 to ≤ *unaffected

References