CVE-2024-28243

Name of the Vulnerable Software and Affected Versions KaTeX versions prior to 0.16.10

Description KaTeX is a JavaScript library for TeX math rendering on the web. 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 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.

Recommendations Upgrade to KaTeX v0.16.10 to remove this vulnerability. Forbid inputs containing the substring "edef" before passing them to KaTeX. As a temporary workaround, consider restricting the use of the edef command in KaTeX until a patch is available.