EUVD-2026-42330

Mistune toc / TableOfContents directive: heading IDs use predictable tocN numbering with no slugification, allowing collision with attacker-controlled id="tocN" content...

GHSA-2HM2-HC3V-44H9 Mistune toc / TableOfContents directive: heading IDs use predictable `toc_N` numbering with no slugification, allowing collision with attacker-controlled `id="toc_N"` content

Summary Type: Predictable identifier generation. The toc plugin and TableOfContents directive both default to generating heading IDs of the form toc1, toc2, toc3, ... with no input-derived component. An attacker who can place a heading anywhere in the document can predict which tocN ID it will...

Updated python-mistune package fixes security vulnerabilities

The updated python-mistune package fixes two security vulnerablities: Prior to 3.2.1, rendertocul builds a table-of-contents tree from a list of level, id, text tuples. Both the id value used as href="" and the text value used as the visible link label are inserted into tags via a plain Python...

OPENSUSE-SU-2026:21339-1 Security update for python-mistune

This update for python-mistune fixes the following issues - CVE-2026-59922: quadratic-time parsing on long runs of some markers in formatting.py can lead to DoS bsc1271117. - CVE-2026-59923: HTMLRenderer.safeurl does not block percent-encoded javascript URIs and allows for XSS bsc1271119. -...

CVE-2026-59930

A flaw was found in Mistune, a Python Markdown parser. The table of contents toc plugin and TableOfContents directive generate heading identifiers IDs as predictable values e.g., tocN without properly processing the heading text. This allows an attacker to control content with a colliding ID, whi...

SUSE CVE-2026-59930

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

Linux Distros Unpatched Vulnerability : CVE-2026-59930

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity via the toc process. An attacker can interfere with same-page navigation, CSS selectors, or JavaScript handlers by creating content with predictable id attributes that collide with...

CVE-2026-59930

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

DEBIAN-CVE-2026-59930

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

PYSEC-2026-2218

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

CVE-2026-59930 Mistune toc / TableOfContents directive: heading IDs use predictable `toc_N` numbering with no slugification, allowing collision with attacker-controlled `id="toc_N"` content

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

CVE-2026-59930

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

CVE-2026-59930 Mistune toc / TableOfContents directive: heading IDs use predictable `toc_N` numbering with no slugification, allowing collision with attacker-controlled `id="toc_N"` content

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

CVE-2026-59930 Mistune toc / TableOfContents directive: heading IDs use predictable `toc_N` numbering with no slugification, allowing collision with attacker-controlled `id="toc_N"` content

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 tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

CVE-2026-59930

Mistune (Python Markdown parser) prior to 3.3.0 has a vulnerability in the toc/TableOfContents directive: heading IDs are generated as predictable toc_N values without slugifying the heading text. This can allow attacker-controlled id="toc_N" content to collide with generated anchors, potentially...

PT-2026-56513

Name of the Vulnerable Software and Affected Versions Mistune versions prior to 3.3.0 Description The toc plugin and TableOfContents directive generate heading IDs using predictable toc N values instead of slugifying the heading text. This allows attacker-controlled content with id="toc N" to...

CVE-2026-8351

The RTMKit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Advanced Heading widget's 'Background Text' parameter in versions up to, and including, 2.0.7 This is due to insufficient output escaping on the 'backgroundtextheading' setting in the render function, which...

CVE-2026-8351

The RTMKit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Advanced Heading widget's 'Background Text' parameter in versions up to, and including, 2.0.7 This is due to insufficient output escaping on the 'backgroundtextheading' setting in the render function, which...

CVE-2026-8351

CVE-2026-8351 concerns the RTMKit plugin for WordPress, vulnerable up to version 2.0.7. The flaw is a Stored Cross-Site Scripting in the Advanced Heading widget via the 'Background Text' parameter. The render() function concatenates the value directly into an HTML attribute without applying esc_a...