CVE-2026-74979 PUBLISHED

Mitigation bypass in the Add-ons Manager component

Assigner: mozilla
Reserved: 17.08.2026 Published: 18.08.2026 Updated: 18.08.2026

Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Product Status

Vendor Mozilla
Product Firefox
Versions
  • unaffected from 153.1 to 153.* (incl.)
  • unaffected from 154 to * (incl.)
Vendor Mozilla
Product Thunderbird
Versions
  • unaffected from 153.1 to 153.* (incl.)
  • unaffected from 154 to * (incl.)

Credits

  • Tomoya Nakanishi

References