KaTeX's maxExpand bypassed by Unicode sub/superscripts
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| KaTeX | KaTeX | affected |
|
No data.
| Vendor | Product | Versions |
|---|---|---|
| Katex | Katex | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2024-0906 | 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. |
Github GHSA |
GHSA-cvr6-37gx-v8wc | KaTeX's maxExpand bypassed by Unicode sub/superscripts |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 2.2% (2.155% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:katex:katex:*:*:*:*:*:*:*:* |