Security Advisory

CVE-2026-44896

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-26 20:33:38

Last updated 2026-06-08 23:34:02

Assigner GitHub_M

CVSS score 5.3

State PUBLISHED

Description

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the render_figure() function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when HTMLRenderer(escape=True) is used, because these values bypass the inline renderer. Version 3.2.1 contains a patch.

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