CVE Tools

Home/Vulnerability/CVE-2026-41239

CVE-2026-41239

DOMPurify has a SAFE_FOR_TEMPLATES bypass in RETURN_DOM mode

Published: Apr 23, 2026Updated: Apr 23, 2026 Sources: CVE List

6.8CVSS

MEDIUM

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.

EPSS Score

N/A

CISA KEV

Not in KEV

Exploits

No Known Exploits

Remediation

No Fix Available

CVSS Vector Breakdown

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

Weaknesses

CWE-79CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-1289CWE-1289: Improper Validation of Unsafe Equivalence in Input

Affected Products

DOMPurify

cure53

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

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

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-41239 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

AI-powered analysis

Plain-language impact assessment and exploitation scenario

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows