Bug 2550479 (CVE-2026-109739) - CVE-2026-109739 firefox: Privilege escalation in the WebExtensions component
Summary: CVE-2026-109739 firefox: Privilege escalation in the WebExtensions component
Keywords:
Status: NEW
Alias: CVE-2026-109739
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-13 13:12 UTC by OSIDB Bzimport
Modified: 2026-10-30 21:07 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-13 13:12:01 UTC 
Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158.
Note You need to log in before you can comment on or make changes to this bug.