MEDIUM 5.1 NVD
CVE-2026-116803
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
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.
References
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-mrv2-3pqr-j5jr
- https://www.vulncheck.com/advisories/dompurify-before-3.4.17-dom-xss-via-in-place-hook-det
This medium severity vulnerability with a CVSS score of 5.1 was published on 2026-10-27 via NVD.
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