Erik Demaine

4 exploits Active since Mar 2024
CVE-2024-28244 WRITEUP MEDIUM WRITEUP
KaTeX 0.15.4-0.16.9 - Denial of Service via Unicode Subscript/Superscript Bypass
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
CVE-2024-28245 WRITEUP MEDIUM WRITEUP
KaTeX 0.11.0-0.16.9 - Cross-Site Scripting via \\includegraphics
KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\includegraphics` that runs arbitrary JavaScript, or generate invalid HTML. Upgrade to KaTeX v0.16.10 to remove this vulnerability.
CVSS 6.3
CVE-2024-28246 WRITEUP MEDIUM WRITEUP
KaTeX 0.11.0-0.16.9 - Cross-Site Scripting via Uppercase Protocol Bypass
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 5.5
CVE-2025-23207 WRITEUP MEDIUM WRITEUP
KaTeX 0.12.0-0.16.20 - Cross-Site Scripting via \htmlData Command
KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\htmlData` that runs arbitrary JavaScript, or generate invalid HTML. Users are advised to upgrade to KaTeX v0.16.21 to remove this vulnerability. Users unable to upgrade should avoid use of or turn off the `trust` option, or set it to forbid `\htmlData` commands, forbid inputs containing the substring `"\\htmlData"` and sanitize HTML output from KaTeX.
CVSS 6.3