CVE-2026-109778 PUBLISHED

Privilege escalation in the WebExtensions component

Assigner: mozilla
Reserved: 13.10.2026 Published: 13.10.2026 Updated: 13.10.2026

Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.

Product Status

Vendor Mozilla
Product Firefox
Versions
  • unaffected from 153.5 to 153.* (incl.)
  • unaffected from 158 to * (incl.)

Credits

  • Mozilla

References