Bug 2526781 (CVE-2026-84143) - CVE-2026-84143 firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15
Summary: CVE-2026-84143 firefox: Internally found bugs fixed in Firefox 155, Firefox E...
Keywords:
Status: NEW
Alias: CVE-2026-84143
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: 2026-09-01 12:50 UTC by OSIDB Bzimport
Modified: 2026-09-10 21:55 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-09-01 12:50:11 UTC 
Internally found bugs present in Firefox 154, Firefox ESR 153.1 and Firefox ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, and Firefox ESR 153.2.
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