CVE-2024-28244

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.