CVE-2026-92015 PUBLISHED

Privilege escalation in the WebExtensions component

Assigner: mozilla
Reserved: 15.09.2026 Published: 15.09.2026 Updated: 16.09.2026

Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16.

Product Status

Vendor Mozilla
Product Firefox
Versions
  • unaffected from 115.41 to 115.* (incl.)
  • unaffected from 140.16 to 140.* (incl.)
  • unaffected from 153.3 to 153.* (incl.)
  • unaffected from 156 to * (incl.)
Vendor Mozilla
Product Thunderbird
Versions
  • unaffected from 140.16 to 140.* (incl.)
  • unaffected from 156 to * (incl.)

Credits

  • Quy Pham

References