Vulnerability Description
KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\htmlData` that runs arbitrary JavaScript, or generate invalid HTML. Users are advised to upgrade to KaTeX v0.16.21 to remove this vulnerability. Users unable to upgrade should avoid use of or turn off the `trust` option, or set it to forbid `\htmlData` commands, forbid inputs containing the substring `"\\htmlData"` and sanitize HTML output from KaTeX.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Katex | Katex | >= 0.12.0, < 0.16.21 |
Related Weaknesses (CWE)
References
- https://github.com/KaTeX/KaTeX/commit/ff289955e81aab89086eef09254cbf88573d415cPatch
- https://github.com/KaTeX/KaTeX/security/advisories/GHSA-cg87-wmx4-v546Third Party Advisory
FAQ
What is CVE-2025-23207?
CVE-2025-23207 is a vulnerability with a CVSS score of 6.3 (MEDIUM). KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using...
How severe is CVE-2025-23207?
CVE-2025-23207 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-23207?
Check the references section above for vendor advisories and patch information. Affected products include: Katex Katex.