CVE-2026-44708 — Mistune Math Plugin XSS Escape Bypass
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…
Published: 2026-05-26 · CVSS: 6.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7