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.
CVSS 6.1EPSS 0.198%Risk 0.62
View source- Published
- 2026-05-26 21:16:39
- Affected versions
- >=3.2.0
- Type
- Package
- Last modified
- 2026-07-24 11:10:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N