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CVE-2026-41239

DOMPurify has a SAFE_FOR_TEMPLATES bypass in RETURN_DOM mode

Published: Apr 23, 2026Updated: Apr 23, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
0.2%
Top 88.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-79CWE-1289

Affected Products

DOMPurifycure53
Library
OSS Libraries / generic-library
cure53OSS Librariesaka dompurify

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/cure53/DOMPurify/security/advisories/GHSA-crv5-9vww-q3g8
github.com
https://github.com/cure53/DOMPurify/releases/tag/3.4.0
github.com

Timeline

Published
Apr 23, 2026
Last Updated
Apr 23, 2026

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