remark-html-16.0.1.tgz: 1 vulnerabilities (highest severity is: 5.3)

[ibm-mend-app]

Vulnerable Library - remark-html-16.0.1.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Vulnerabilities

Vulnerability	Severity	CVSS	Exploit Maturity	EPSS	Dependency	Type	Fixed in (remark-html version)	Remediation Possible**
CVE-2025-66400	Medium	5.3	Not Defined	0.1%	mdast-util-to-hast-13.2.0.tgz	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2025-66400

Vulnerable Library - mdast-util-to-hast-13.2.0.tgz

Library home page: https://registry.npmjs.org/mdast-util-to-hast/-/mdast-util-to-hast-13.2.0.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Dependency Hierarchy:

• remark-html-16.0.1.tgz (Root Library)
  • ❌ mdast-util-to-hast-13.2.0.tgz (Vulnerable Library)

Found in base branch: main

Vulnerability Details

mdast-util-to-hast is an mdast utility to transform to hast. From 13.0.0 to before 13.2.1, multiple (unprefixed) classnames could be added in markdown source by using character references. This could make rendered user supplied markdown code elements appear like the rest of the page. This vulnerability is fixed in 13.2.1.

Publish Date: 2025-12-01

URL: CVE-2025-66400

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.1%

CVSS 3 Score Details (5.3)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: syntax-tree/mdast-util-to-hast@ab3a795

Release Date: 2025-12-01

Fix Resolution: https://github.com/syntax-tree/mdast-util-to-hast.git - 13.2.1