CVE-2025-23207 – katex

Package

Manager: npm
Name: katex
Vulnerable Version: >=0.12.0 <0.16.21

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00054 pctl0.16743

Details

KaTeX \htmlData does not validate attribute names ### Impact KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\htmlData` that runs arbitrary JavaScript, or generate invalid HTML. ### Patches Upgrade to KaTeX v0.16.21 to remove this vulnerability. ### Workarounds - Avoid use of or turn off the `trust` option, or set it to forbid `\htmlData` commands. - Forbid inputs containing the substring `"\\htmlData"`. - Sanitize HTML output from KaTeX. ### Details `\htmlData` did not validate its attribute name argument, allowing it to generate invalid or malicious HTML that runs scripts. ### For more information If you have any questions or comments about this advisory: - Open an issue or security advisory in the [KaTeX repository](https://github.com/KaTeX/KaTeX/) - Email us at [katex-security@mit.edu](mailto:katex-security@mit.edu)

Metadata

Created: 2025-01-17T21:22:56Z
Modified: 2025-01-21T18:31:02Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/01/GHSA-cg87-wmx4-v546/GHSA-cg87-wmx4-v546.json
CWE IDs: ["CWE-116"]
Alternative ID: GHSA-cg87-wmx4-v546
Finding: F404
Auto approve: 1