Cross-Site Scripting in markdown-it-katex

Description

All versions of markdown-it-katex are vulnerable to Cross-Site Scripting (XSS). The package fails to properly escape error messages, which may allow attackers to execute arbitrary JavaScript in a victim’s browser by triggering an error.

Recommendation

No fix is available yet. Followings are affected versions:

• >= 0.0.0

References

• GHSA-5ff8-jcf9-fw62
• www.npmjs.com
• CWE-79
• OWASP 2021-A3

Related Issues

• Cross-Site Scripting in markdown-to-jsx (GHSA-ccrp-c664-8p4j) - Vulnerability
• Bootstrap Cross-Site Scripting (XSS) vulnerability - CVE-2024-6531
• CKEditor 5 cross-site scripting (XSS) vulnerability in the clipboard package - CVE-2025-58064
• Froala Editor Cross-site Scripting vulnerability - CVE-2023-41592

Tags:

npm

markdown-it-katex