CVE-2026-44708

Published: May 26, 2026Modified: Jul 24, 2026

6.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: security-advisories@github.com (Secondary)

Description

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math ($...$) and block math ($$...$$) by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is explicitly created with escape=True, which is supposed to guarantee that all user-controlled text is sanitised before reaching the DOM. This vulnerability is fixed in 3.2.1.

Affected (1)

Products: Mistune Project: Mistune

Mistune Project

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mistune Project Mistune	Before 3.2.1

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (3)

https://github.com/lepture/mistune/releases/tag/v3.2.1

Source: security-advisories@github.com

ProductRelease Notes

https://github.com/lepture/mistune/security/advisories/GHSA-8g87-j6q8-g93x

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/lepture/mistune/security/advisories/GHSA-8g87-j6q8-g93x

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.