Security Advisory

CVE-2026-49458

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-14 19:58:50

Last updated 2026-07-15 13:03:02

Assigner GitHub_M

CVSS score 6.1

State PUBLISHED

Description

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.

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