Bug 2489212 (CVE-2026-12299) - CVE-2026-12299 firefox: thunderbird: JIT miscompilation in the DOM: Core & HTML component
Summary: CVE-2026-12299 firefox: thunderbird: JIT miscompilation in the DOM: Core & HT...
Keywords:
Status: NEW
Alias: CVE-2026-12299
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 17:54 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-06-16 14:01:36 UTC 
JIT miscompilation in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.
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