CVE-2026-65901: CURE53 Dompurify

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

DOMPurify through 3.4.6 contains a cross-site scripting vulnerability in IN_PLACE mode that trusts attacker-controlled nodeName on live non-form nodes. Attackers can supply hostile live DOM objects with real script children whose observable nodeName is clobbered to appear as allowed elements, causing scripts to execute when the sanitized tree is inserted into a live document.

Affected products

• CURE53 Dompurify: before 3.4.7 (fixed in 3.4.7)

Published 2026-07-23. Last modified 2026-07-28.