CVE-2024-28243: medium-severity vulnerability in KaTeX
KaTeX's maxExpand bypassed by \edef
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 1.4%
KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\edef` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. This can be used as an availability attack, where e.g. a client rendering another user's KaTeX input will be unable to use the site due to memory overflow, tying up the main thread, or stack overflow. Upgrade to KaTeX v0.16.10 to remove this vulnerability.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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-2025-23207MEDIUM\htmlData does not validate attribute names in KaTeXEPSS 0.4%CVE-2024-28246MEDIUMKaTeX is missing normalization of the protocol in URLs allows bypassing forbidden protocolsEPSS 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%