CVE-2026-65901CWE-79

DOMPurify 3.4.6 Cross-Site Scripting via IN_PLACE nodeName

Medium · published July 23, 2026

CVSS v4.0
5.1
EPSS
0%
Percentile
20.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00285 · 20.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-23T13:16Z
EPSS history
Timeline
  • 23 JUL 13:16Z
    DOMPurify 3.4.6 Cross-Site Scripting via IN_PLACE nodeName
    cvelistv5