Bug 2549751 (CVE-2026-109344) - CVE-2026-109344 dompurify: DOMPurify: Cross-Site Scripting via unneutralized elements detached during in-place sanitization
Summary: CVE-2026-109344 dompurify: DOMPurify: Cross-Site Scripting via unneutralized ...
Keywords:
Status: NEW
Alias: CVE-2026-109344
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: 2026-10-12 16:42 UTC by OSIDB Bzimport
Modified: 2026-10-12 16:57 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-12 16:42:23 UTC 
DOMPurify from 3.4.13 before 3.4.16 contains a cross-site scripting vulnerability because IN_PLACE mode fails to neutralize subtrees detached by afterSanitizeElements or afterSanitizeAttributes hooks. Attackers can supply markup with on* handlers inside a wrapper removed by such hooks, leaving handlers armed on the live DOM to execute script in the victim origin.
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