# KaTeX vulnerabilities

Source: https://junglewise.ai/threats/vendors/katex  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/katex.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in KaTeX: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-103923, was published on 1 October 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 6 (0 critical, 0 exploited in the wild)

## About KaTeX

JavaScript library for rendering mathematical expressions and equations.

## Latest KaTeX vulnerabilities

- [CVE-2026-103923: KaTeX prototype pollution in renderer settings](https://junglewise.ai/threats/cve-2026-103923-katex-is-a-fast-easy-to-use-javascript-library-for-tex-math) (medium, CVSS 4, published 1 Oct 2026)
- [CVE-2025-23207: KaTeX htmlData attribute name validation bypass](https://junglewise.ai/threats/cve-2025-23207-katex-htmldata-attribute-name-validation-bypass) (low, CVSS 3.1, published 17 Jan 2025)
- [CVE-2024-28246: KaTeX protocol normalization bypass in trust option](https://junglewise.ai/threats/cve-2024-28246-katex-protocol-normalization-bypass-in-trust-option) (low, CVSS 3.1, published 25 Mar 2024)
- [CVE-2024-28245: KaTeX includegraphics improper output encoding in filename](https://junglewise.ai/threats/cve-2024-28245-katex-includegraphics-improper-output-encoding-in-filename) (low, CVSS 3.1, published 25 Mar 2024)
- [CVE-2024-28244: KaTeX maxExpand bypass via Unicode sub/superscripts](https://junglewise.ai/threats/cve-2024-28244-katex-maxexpand-bypass-via-unicode-sub-superscripts) (low, CVSS 3.1, published 25 Mar 2024)
- [CVE-2024-28243: KaTeX maxExpand bypass via \edef token expansion](https://junglewise.ai/threats/cve-2024-28243-katex-maxexpand-bypass-via-edef-token-expansion) (low, CVSS 3.1, published 25 Mar 2024)

## Most severe KaTeX vulnerabilities

- [CVE-2026-103923: KaTeX prototype pollution in renderer settings](https://junglewise.ai/threats/cve-2026-103923-katex-is-a-fast-easy-to-use-javascript-library-for-tex-math) (medium, CVSS 4, published 1 Oct 2026)
- [CVE-2024-28244: KaTeX maxExpand bypass via Unicode sub/superscripts](https://junglewise.ai/threats/cve-2024-28244-katex-maxexpand-bypass-via-unicode-sub-superscripts) (low, CVSS 3.1, published 25 Mar 2024)
- [CVE-2024-28243: KaTeX maxExpand bypass via \edef token expansion](https://junglewise.ai/threats/cve-2024-28243-katex-maxexpand-bypass-via-edef-token-expansion) (low, CVSS 3.1, published 25 Mar 2024)
- [CVE-2025-23207: KaTeX htmlData attribute name validation bypass](https://junglewise.ai/threats/cve-2025-23207-katex-htmldata-attribute-name-validation-bypass) (low, CVSS 3.1, published 17 Jan 2025)
- [CVE-2024-28245: KaTeX includegraphics improper output encoding in filename](https://junglewise.ai/threats/cve-2024-28245-katex-includegraphics-improper-output-encoding-in-filename) (low, CVSS 3.1, published 25 Mar 2024)
- [CVE-2024-28246: KaTeX protocol normalization bypass in trust option](https://junglewise.ai/threats/cve-2024-28246-katex-protocol-normalization-bypass-in-trust-option) (low, CVSS 3.1, published 25 Mar 2024)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 1 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "KaTeX vulnerabilities", https://junglewise.ai/threats/vendors/katex, 9 November 2026.