CVE-2026-59929
EUVD-2026-4233608.07.2026, 17:17
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.
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mistune_project | mistune | 𝑥 < 3.3.0 |
𝑥
= Vulnerable software versions
Debian Releases
Ubuntu Releases