All vulnerabilities
CVE-2026-109345GHSA-6688-9rhm-gjv2

DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root

cure53 DOMPurifynpmLibraries & packages
Open in ThreatlineRecord JSON
CVSS
5.1Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 13 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.4.16Fixed versionCVE List
Published12 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

  • 3.4.16DOMPurifyCVE List
  • 3.4.16dompurify, npmOSVnpm install dompurify@3.4.16

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization because IN_PLACE mode returns a force-removed style element whose text content still carries markup. Attackers can supply a style element containing a closing style tag and an img onerror payload, which executes script when the application serializes and re-parses the returned node.

Text from CVE List

Affected versions 3

  • DOMPurifyaffected: all versions before 3.4.16CVE List
  • DOMPurifyunaffected: 3.4.16CVE List
  • dompurify, npmfrom first release, fixed in 3.4.16OSV

References 2