K000163420: Python-Markdown vulnerability CVE-2025-69534

Security Advisory Description Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processe...

Astra Linux – Vulnerabilities in Python 2.7, Python 3.11, Python 3.7

Python-Markdown version 3.8 contains a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Since Python-Markdown does not catch this exception, any application that processes Markdown controlled by...

Security Bulletin: IBM Cognos Analytics 12.0.4 and 12.1.3 versions are affected by security vulnerabilities

Summary There are vulnerabilities identified in Cognos Analytics application and its open source components. These vulnerabilties has been resolved and the remediation versions is provided below. Vulnerability Details CVEID:CVE-2024-56344 DESCRIPTION: IBM Cognos Analytics could allow a remote...

Linux Distros Unpatched Vulnerability : CVE-2026-76098

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. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering...

CVE-2026-76098

Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.rendertoken can excee...

CVE-2026-76098 Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown

Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.rendertoken can excee...

CVE-2026-76098

Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.rendertoken can excee...

CVE-2026-61632

CVE-2026-61632 affects PyMdown Extensions (b64 extension) up to version 10.21.3. The b64 code path in pymdownx/b64.py joins the attacker-controlled image src onto a configured base_path (or uses an absolute path) and opens the result without ensuring the resolved path stays inside base_path, allo...

CVE-2026-61632: Improper Limitation of a Pathname to a Restricted Directory

PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. In versions up to and including 10.21.3, the b64 extension is vulnerable to a path traversal that discloses arbitrary files: it inlines images referenced by by joining the src onto the configured basepath with...

EUVD-2026-42334

Mistune: XSS via unescaped class option in Admonition directive...

EUVD-2026-42339

Mistune directives/include: mutual .. include:: recursion crashes the renderer with RecursionError, denial of service via two attacker-controlled markdown files...

Oracle Linux 10 : python-markdown (ELSA-2026-19155)

The remote Oracle Linux 10 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-19155 advisory. 3.5.1-6.1 - Fix CVE-2025-69534 RHEL-153740 Tenable has extracted the preceding description block directly from the Oracle Linux security advisory. Note that...

DEBIAN-CVE-2026-46338

PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. From 10.0.1 until 10.21.3, pymdownx.snippets uses a string-prefix containment check in SnippetPreprocessor.getsnippetpath in pymdownx/snippets.py when restrictbasepath: True, allowing markdown snippet directives t...

EUVD-2026-45003

PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. From 10.0.1 until 10.21.3, pymdownx.snippets uses a string-prefix containment check in SnippetPreprocessor.getsnippetpath in pymdownx/snippets.py when restrictbasepath: True, allowing markdown snippet directives t...

SUSE CVE-2026-59927

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise...

EUVD-2026-39007

Mistune: Potential DoS via quadratic-time parsing in parselinktext...

CVE-2026-59928

A flaw was found in Mistune, a Python Markdown parser. A remote attacker could exploit this vulnerability by providing a specially crafted Markdown document containing numerous repeated or distinct reference-link definitions. This can lead to excessive processing, causing CPU exhaustion and a...

CVE-2026-59927

A flaw was found in Mistune, a Python Markdown parser. The Include directive in Mistune's src/mistune/directives/include.py does not properly detect indirect cycles when two Markdown files include each other. This oversight allows for unbounded recursion, which can lead to a RecursionError and...

MiracleLinux 9 : python-markdown-3.3.4-4.el9_8.2 (AXSA:2026-1228:01)

The remote MiracleLinux 9 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2026-1228:01 advisory. python-markdown: denial of service via malformed HTML-like sequences CVE-2025-69534 Tenable has extracted the preceding description block directly from the...

Linux Distros Unpatched Vulnerability : CVE-2026-59923

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, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing...