node-dompurify: DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG
CVE-2026-49978 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-49978, released July 22, 2026. It is not reported as exploited. Patch Radar priority: High.
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.7, DOMPurify IN_PLACE sanitization could skip shadow contents attached to an element inside <template>.content, allowing attacker-controlled markup such as event handlers, JavaScript URLs, or scripts to survive and execute when an application cloned and inserted the sanitized template. This issue is fixed in version 3.4.7.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-dompurify · Debian 14 | 3.4.12+dfsg-1 | DEBIAN-CVE-2026-49978 | Jul 22, 2026 |
| rh-podman-desktop · RHEL 10 | 1.1.2-1.el10_2 | RHSA-2026:57590 | Aug 21, 2026 |
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