Description
Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and realier, 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.
Details
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| mistune | โ | 3.2.1 |
| unknown | โ | โ |
References
Similar Threats
- Unknown DEBIAN-CVE-2026-44708
- Unknown DEBIAN-CVE-2026-44896
- Unknown DEBIAN-CVE-2026-44897
- Unknown DEBIAN-CVE-2026-44899
- Unknown UBUNTU-CVE-2026-44896
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