# CVE-2026-49459: node-dompurify: DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG CVE-2026-49459 is fixed in node-dompurify on 1 platform by DEBIAN-CVE-2026-49459 (version 3.4.12+dfsg-1), released July 22, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-49459 - Priority: Routine - CVSS: 6.1 (medium) - EPSS: 0.0037 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 14, 2026 ## Description DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(root, { IN_PLACE: true }) could preserve event-handler attributes on an attacker-controlled
root when a descendant name clobbered properties checked by _isClobbered, because _forceRemove no-opped on the parent-less root and _sanitizeAttributes returned early. This issue is fixed in version 3.4.6. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | node-dompurify Debian 14 | 3.4.12+dfsg-1 | [DEBIAN-CVE-2026-49459](https://patchblox.com/security/data/fix/linux/debian-cve-2026-49459.md) | Jul 22, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.