# CVE-2024-28246: node-katex: KaTeX is a JavaScript library for TeX math rendering on the web

CVE-2024-28246 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2024-28246, released March 25, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-28246
- Priority: Routine
- CVSS: 5.4 (medium)
- EPSS: 0.0041
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 25, 2024

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | fonts-katex Ubuntu 22.04.1 LTS (jammy) | 0.13.11+~cs6.0.0-2ubuntu0.1~esm1 | [fonts-katex 0.13.11+~cs6.0.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-fonts-katex-0.13.11-cs6.0.0-2ubuntu0.1-esm1.md) | Jan 17, 2025 |
| Linux | katex Ubuntu 22.04.1 LTS (jammy) | 0.13.11+~cs6.0.0-2ubuntu0.1~esm1 | [katex 0.13.11+~cs6.0.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-katex-0.13.11-cs6.0.0-2ubuntu0.1-esm1.md) | Jan 17, 2025 |
| Linux | libjs-katex Ubuntu 22.04.1 LTS (jammy) | 0.13.11+~cs6.0.0-2ubuntu0.1~esm1 | [libjs-katex 0.13.11+~cs6.0.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libjs-katex-0.13.11-cs6.0.0-2ubuntu0.1-esm1.md) | Jan 17, 2025 |
| Linux | node-katex Debian 13.5 (trixie) | 0.16.10+~cs6.1.0-1 | [DEBIAN-CVE-2024-28246](https://patchblox.com/security/data/fix/linux/debian-cve-2024-28246.md) | Mar 25, 2024 |
| Linux | node-katex Debian 14 | 0.16.10+~cs6.1.0-1 | [DEBIAN-CVE-2024-28246](https://patchblox.com/security/data/fix/linux/debian-cve-2024-28246.md) | Mar 25, 2024 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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