CVE-2024-28244

CVE-2024-28244 · KaTeX's maxExpand bypassed by Unicode sub/superscripts

This page contains facts from public vulnerability sources. Check the original advisory before updating.

KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\def` or `\newcommand` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. KaTeX supports an option named maxExpand which aims to prevent infinitely recursive macros from consuming all available memory and/or triggering a stack overflow error. Unfortunately, support for "Unicode (sub|super)script characters" allows an attacker to bypass this limit. Each sub/superscript group instantiated a separate Parser with its own limit on macro executions, without inheriting the current count of macro executions from its parent. This has been corrected in KaTeX v0.16.10.

CVSS 6.5 · Medium · EPSS 2.2% · Fix available

Published

2024-03-25T19:45:50.907Z

Updated

2024-08-02T00:48:49.553Z

Stack: system · node

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