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Template Injection Affecting dompurify package, versions <2.4.9 >=3.0.0 <3.0.11

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    Exploit Maturity Proof of concept

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  • Snyk ID SNYK-JS-DOMPURIFY-6474511
  • published 11 Apr 2024
  • disclosed 20 Mar 2024
  • credit Ry0Tak
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Introduced: 20 Mar 2024

CVE NOT AVAILABLE CWE-1336 Open this link in a new tab

How to fix?

Upgrade dompurify to version 2.4.9, 3.0.11 or higher.

Overview

dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG.

Affected versions of this package are vulnerable to Template Injection in purify.js, due to inconsistencies in the parsing of XML and HTML tags. Executable code can be injected in HTML inside XML CDATA blocks.

PoC 

<![CDATA[ ><img src onerror=alert(1)> ]]>