CVE-2025-23207

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.

Reserved 2025-01-13 | Published 2025-01-17 | Updated 2025-01-17 | Assigner GitHub_M

Problem types

CWE-116: Improper Encoding or Escaping of Output

Product status

>= 0.12.0, < 0.16.21
affected

References

github.com/.../KaTeX/security/advisories/GHSA-cg87-wmx4-v546

github.com/...ommit/ff289955e81aab89086eef09254cbf88573d415c

cve.org (CVE-2025-23207)

nvd.nist.gov (CVE-2025-23207)

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