Bug 2460100 (CVE-2026-6755) - CVE-2026-6755 firefox: thunderbird: Mitigation bypass in the DOM: postMessage component
Summary: CVE-2026-6755 firefox: thunderbird: Mitigation bypass in the DOM: postMessage...
Keywords:
Status: NEW
Alias: CVE-2026-6755
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: 2026-04-21 14:02 UTC by OSIDB Bzimport
Modified: 2026-06-29 20:33 UTC (History)
7 users (show)

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

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Description OSIDB Bzimport 2026-04-21 14:02:53 UTC 
Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150.
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