MEDIUM6.1
PYSEC-2026-2206
Quick fix
PYSEC-2026-2206 — mistune: upgrade to the fixed version with the command below.
pip install --upgrade 'mistune>=3.2.1'Details
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.
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