CVE-2024-28246: medium-severity vulnerability in KaTeX
KaTeX is missing normalization of the protocol in URLs allows bypassing forbidden protocols
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.4%
KaTeX is a JavaScript library for TeX math rendering on the web. Code that uses KaTeX's `trust` option, specifically that provides a function to blacklist certain URL protocols, can be fooled by URLs in malicious inputs that use uppercase characters in the protocol. In particular, this can allow for malicious input to generate `javascript:` links in the output, even if the `trust` function tries to forbid this protocol via `trust: (context) => context.protocol !== 'javascript'`. Upgrade to KaTeX v0.16.10 to remove this vulnerability.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Affected products
KaTeX · KaTeXRelated CVEs — KaTeX
In the same product, most dangerous first.
CVE-2024-28244MEDIUMKaTeX's maxExpand bypassed by Unicode sub/superscriptsEPSS 2.2%CVE-2024-28243MEDIUMKaTeX's maxExpand bypassed by \edefEPSS 1.4%CVE-2025-23207MEDIUM\htmlData does not validate attribute names in KaTeXEPSS 0.4%CVE-2024-28245MEDIUMKaTeX's \includegraphics does not escape filenameEPSS 0.4%CVE-2026-103923LOWKaTeX: Existing prototype pollution can bypass trust restrictionsEPSS 0.3%