CVE-2026-59930
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
4.3 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Vulnerability Description
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the toc plugin and TableOfContents directive generate heading IDs as predictable toc_N values without slugifying the heading text, allowing attacker-controlled id="toc_N" content to collide with generated anchors and redirect same-page navigation, CSS selectors, or JavaScript handlers. This issue is fixed in version 3.3.0.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-345
Source
NVD
Vendor
lepture
Product
mistune
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