CVE-2026-116803
Medium
Description
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductDompurify
PublishedOct 27, 2026
First seenOct 27, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- dompurify3.4.17 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dompurifynpm | v < 3.4.17 | 3.4.17 |
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