Medium severity6.8NVD Advisory· Published Apr 23, 2026· Updated Apr 23, 2026

CVE-2026-41239

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Starting in version 1.0.10 and prior to version 3.4.0, SAFE_FOR_TEMPLATES strips {{...}} expressions from untrusted HTML. This works in string mode but not with RETURN_DOM or RETURN_DOM_FRAGMENT, allowing XSS via template-evaluating frameworks like Vue 2. Version 3.4.0 patches the issue.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
dompurifynpm	>= 1.0.10, < 3.4.0	3.4.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-crv5-9vww-q3g8ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-41239ghsaADVISORY
github.com/cure53/DOMPurify/releases/tag/3.4.0nvdWEB
github.com/cure53/DOMPurify/security/advisories/GHSA-crv5-9vww-q3g8nvdWEB

News mentions

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cvss	0.442
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000