VulnerabilityAnalyzed
CVE-2026-44708
This vulnerability is fixed in 3.2.1.
MEDIUM 6.1EPSS 0.23%
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- mistune project/mistune
- Source
- security-advisories@github.com
References
- https://github.com/lepture/mistune/releases/tag/v3.2.1Product, Release Notes
- https://github.com/lepture/mistune/security/advisories/GHSA-8g87-j6q8-g93xExploit, Vendor Advisory
- https://github.com/lepture/mistune/security/advisories/GHSA-8g87-j6q8-g93xExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.