Bug 2489207 (CVE-2026-12294) - CVE-2026-12294 firefox: thunderbird: Sandbox escape in the DOM: Workers component
Summary: CVE-2026-12294 firefox: thunderbird: Sandbox escape in the DOM: Workers compo...
Keywords:
Status: NEW
Alias: CVE-2026-12294
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-16 14:01 UTC by OSIDB Bzimport
Modified: 2026-06-17 17:53 UTC (History)
5 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-06-16 14:01:22 UTC 
Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.
Note You need to log in before you can comment on or make changes to this bug.