CVE-2026-65901

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.

CVSS 4.0

5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-07-23

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• cure53:dompurify

Packages (OSV)

References

• https://github.com/cure53/DOMPurify/security/advisories/GHSA-x4vx-rjvf-j5p4
• https://www.vulncheck.com/advisories/dompurify-cross-site-scripting-via-in-place-nodename
• https://github.com/cure53/DOMPurify/security/advisories/GHSA-x4vx-rjvf-j5p4

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