node-dompurify: DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG
CVE-2026-49458 is fixed in node-dompurify on 1 platform by DEBIAN-CVE-2026-49458 (version 3.4.12+dfsg-1), released July 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-dompurify · Debian 14 | 3.4.12+dfsg-1 | DEBIAN-CVE-2026-49458 | Jul 22, 2026 |
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