CVE-2026-59929

Publié : 8 juillet 2026

Modifié : 8 juillet 2026

Score CVSS

6.1

MEDIUM

Description détaillée

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safe_url filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and data: schemes, allowing legacy or chained schemes such as feed:, view-source:, jar:, livescript:, mocha:, ms-its:, mk:, and res: to reach rendered href and src attributes and potentially execute script in affected user agents. This issue is fixed in version 3.3.0.

Vecteur d'attaque (CVSS)

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

Références et Patchs

https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc https://github.com/lepture/mistune/releases/tag/v3.3.0 https://github.com/lepture/mistune/security/advisories/GHSA-qfrw-5rxm-mhh2

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