CVE-2026-44896

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

6.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

May 08, 2026

Last Modified

May 28, 2026

CWE ID

CWE-79

Source

GitHub

Vendor

pip

Product

mistune

External References

https://github.com/lepture/mistune/security/advisories/GHSA-58cw-g322-p94v
https://github.com/advisories/GHSA-58cw-g322-p94v

CVE-2026-44896

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

Discussion (0)

Add Comment