rdiscount has an Out-of-bounds Read

Summary A signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INTMAX are truncated to a signed int before entering the native parser, allowing the parser to read past the end of the supplied buffer and crash the process. Details In both...

Linux Distros Unpatched Vulnerability : CVE-2026-35166

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Hugo is a static site generator. From 0.60.0 to before 0.159.2, links and image links in the default markdown to HTML renderer are not properly escaped. Hugo...

Hugo: Certain markdown links are not properly escaped

Impact Links and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected. Patches Patched in v0.159.2 Workarounds Create custom render hooks for links and images in...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the markdown to HTML rendering. An attacker can inject arbitrary scripts by crafting malicious links or image links in markdown content, which may be executed in the context of users viewing the rendered HTM...

GHSA-MCV8-8M8X-48PG Hugo: Certain markdown links are not properly escaped

Impact Links and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected. Patches Patched in v0.159.2 Workarounds Create custom render hooks for links and images in...

CVE-2026-5484 BookStackApp BookStack Chapter Export ExportFormatter.php chapterToMarkdown access control

A weakness has been identified in BookStackApp BookStack up to 26.03. Affected is the function chapterToMarkdown of the file app/Exports/ExportFormatter.php of the component Chapter Export Handler. Executing a manipulation of the argument pages can lead to improper access controls. It is possible...

OESA-2026-1789 python-markdown security update

This is a Python implementation of John Gruber’s Markdown. It is almost completely compliant with the reference implementation, though there are a few known issues. Security Fixes: Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause...

OESA-2026-1787 python-markdown security update

This is a Python implementation of John Gruber’s Markdown. It is almost completely compliant with the reference implementation, though there are a few known issues. Security Fixes: Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause...

OESA-2026-1790 python-markdown security update

This is a Python implementation of John Gruber’s Markdown. It is almost completely compliant with the reference implementation, though there are a few known issues. Security Fixes: Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause...

OESA-2026-1788 python-markdown security update

This is a Python implementation of John Gruber’s Markdown. It is almost completely compliant with the reference implementation, though there are a few known issues. Security Fixes: Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause...

PT-2026-30283

Name of the Vulnerable Software and Affected Versions Hugo versions 0.60.0 through 0.159.1 Description Hugo, a static site generator, has an issue where links and image links in the default markdown to HTML renderer are not properly escaped. Users who trust their Markdown content or have custom...

PT-2026-30724

Name of the Vulnerable Software and Affected Versions Discount versions 1.3.1.1 through 2.2.7.3 Description A signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT MAX are truncated to a signed int before entering the native parser,...

TinaCMS 安全漏洞

TinaCMS is an open-source headless CMS developed by Tina for Markdown, MDX, and JSON formats. Versions of TinaCMS prior to 2.2.2 contained a security vulnerability. This vulnerability stemmed from string-based path validation in FilesystemBridge, which allowed operations on files outside of the...

The vulnerability in the frontend/src/utils/chat/markdown.js script of the LLM system’s launch and management framework, which allows attackers to perform cross-site scripting (XSS) attacks.

The vulnerability in the frontend/src/utils/chat/markdown.js script of the LLM system’s startup and management mechanism is related to insufficient protection of the web page structure. Exploiting this vulnerability could allow a malicious actor to perform XSS attacks across different websites...

Amazon Linux 2023 : python3-markdown (ALAS2023-2026-1492)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1492 advisory. 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-...

CVE-2026-33882

Statamic is a Laravel and Git powered content management system CMS. Prior to versions 5.73.16 and 6.7.2, the markdown preview endpoint could be manipulated to return augmented data from arbitrary fieldtypes. With the users fieldtype specifically, an authenticated control panel user could retriev...

SUSE CVE-2026-33206

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a path traversal vulnerability exists in Calibre' handling of images in Markdown and other similar text-based files allowing an attacker to include arbitrary files from the...

CVE-2026-33742

Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Product notes fields in Invoice Ninja v5.13.0 allow raw HTML via Markdown rendering, enabling stored XSS. The Markdown parser output was not sanitized with purify::clean before being included in...

CVE-2026-33664

Kestra is an open-source, event-driven orchestration platform Versions up to and including 1.3.3 render user-supplied flow YAML metadata fields — description, inputs.displayName, inputs.description — through the Markdown.vue component instantiated with html: true. The resulting HTML is injected...

CVE-2026-33882

Statamic is a Laravel and Git powered content management system CMS. Prior to versions 5.73.16 and 6.7.2, the markdown preview endpoint could be manipulated to return augmented data from arbitrary fieldtypes. With the users fieldtype specifically, an authenticated control panel user could retriev...