Bug 2561474 (CVE-2026-116803) - CVE-2026-116803 dompurify: DOMPurify: Cross-site scripting via unneutralized detached elements during in-place sanitization
Summary: CVE-2026-116803 dompurify: DOMPurify: Cross-site scripting via unneutralized ...
Keywords:
Status: NEW
Alias: CVE-2026-116803
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: 2026-10-26 23:21 UTC by OSIDB Bzimport
Modified: 2026-10-26 23:29 UTC (History)
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Description OSIDB Bzimport 2026-10-26 23:21:53 UTC 
DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to keep event handlers armed when an IN_PLACE hook removes a parent or sibling node. Attacker markup in detached subtrees is never walked or neutralized, so handlers like img onerror fire after sanitize() returns, causing DOM XSS.
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