Bug 2489232 (CVE-2026-12296) - CVE-2026-12296 firefox: thunderbird: Sandbox escape in the Security: Process Sandboxing component
Summary: CVE-2026-12296 firefox: thunderbird: Sandbox escape in the Security: Process ...
Keywords:
Status: NEW
Alias: CVE-2026-12296
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 14:02 UTC by OSIDB Bzimport
Modified: 2026-06-17 17:53 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-06-16 14:02:32 UTC 
Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.
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