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

• node-forge has ASN.1 Unbounded Recursion - CVE-2025-66031
• Deserialization of Untrusted Data in bson - CVE-2020-7610
• Cross-site scripting in bootstrap-select - CVE-2019-20921
• XSS vulnerability that affects bootstrap - CVE-2018-20676

Tags:

npm

markdown-it-katex