CVE-2026-0540 (Medium) detected in dompurify-3.3.1.tgz

[mend-bolt-for-github]

CVE-2026-0540 - Medium Severity Vulnerability

Vulnerable Library - dompurify-3.3.1.tgz

DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else usin

Library home page: https://registry.npmjs.org/dompurify/-/dompurify-3.3.1.tgz

Path to dependency file: /package.json

Path to vulnerable library: /home/wss-scanner/.yarn/berry/cache/dompurify-npm-3.3.1-5bbe58c5ff-10.zip

Dependency Hierarchy:

• ❌ dompurify-3.3.1.tgz (Vulnerable Library)

Found in HEAD commit: d87706978173ac6516da5e83374518c21263b77b

Found in base branch: master

Vulnerability Details

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.
Mend Note: The description of this vulnerability differs from MITRE.

Publish Date: 2026-03-03

URL: CVE-2026-0540

CVSS 3 Score Details (6.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-v2wj-7wpq-c8vv

Release Date: 2026-03-03

Fix Resolution: dompurify - 3.3.2,dompurify - 2.5.9

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[GilbertCherrie]

Fixed in this pr: #9894