42 matches found
CVE-2026-20841
CVE-2026-20841 - Windows Notepad Remote Code Execution RCE Security Research & Technical Analysis Repository ⚠️ This repository is intended for educational, defensive, and research purposes only. 📖 Overview CVE-2026-20841 is a critical Remote Code Execution RCE vulnerability affecting Microsoft...
CVE-2026-86434
league/commonmark versions = 2.0.0 and 2.8.4 patched in 2.9.0 contain a denial of service vulnerability in UniqueSlugNormalizer::normalize, which restarts its numeric-suffix search from 1 on every slug collision, resulting in OK^2 time complexity for K headings that collapse to the same base slug...
DEBIAN-CVE-2026-86428
commonmark versions from 1.5.0 before 2.10.0 contain a denial of service vulnerability in the AttributesExtension when processing distinctly-named attributes. Attackers can submit Markdown with numerous distinct attribute names to cause quadratic-time attribute merging and filtering, consuming...
Linux Distros Unpatched Vulnerability : CVE-2026-86431
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an...
Linux Distros Unpatched Vulnerability : CVE-2026-86434
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - league/commonmark versions = 2.0.0 and 2.8.4 patched in 2.9.0 contain a denial of service vulnerability in UniqueSlugNormalizer::normalize, which restarts its...
CVE-2026-53758 Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized
Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization,...
CVE-2026-53758 Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized
Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization,...
CVE-2026-80180
Stored XSS via markdown HTML processing in Apache Allura. This issue affects Apache Allura: from through 1.20.0. Users are recommended to upgrade to version 1.21.0, which fixes the issue...
EUVD-2026-70921
Stored XSS via markdown HTML processing in Apache Allura. This issue affects Apache Allura: from through 1.20.0. Users are recommended to upgrade to version 1.21.0, which fixes the issue...
CVE-2026-80180 Apache Allura: Stored XSS via markdown HTML processing
Stored XSS via markdown HTML processing in Apache Allura. This issue affects Apache Allura: from through 1.20.0. Users are recommended to upgrade to version 1.21.0, which fixes the issue...
CVE-2026-80180 Apache Allura: Stored XSS via markdown HTML processing
Stored XSS via markdown HTML processing in Apache Allura. This issue affects Apache Allura: from through 1.20.0. Users are recommended to upgrade to version 1.21.0, which fixes the issue...
CVE-2026-80180
A Stored Cross-Site Scripting (XSS) vulnerability exists in Apache Allura due to improper neutralization of input during markdown HTML processing . This issue affects versions from the initial release through 1.20.0 . The vulnerability allows for the execution of malicious scripts in the context ...
PT-2026-85417
Stored XSS via markdown HTML processing in Apache Allura. This issue affects Apache Allura: from through 1.20.0. Users are recommended to upgrade to version 1.21.0, which fixes the issue...
linkify-it: linkify-it: Denial of Service via algorithmic complexity vulnerability
A flaw was found in linkify-it, a library for recognizing links with full Unicode support. The LinkifyIt.prototype.match function, the package's primary public API, has an algorithmic complexity of ON² for inputs containing many fuzzy links or emails. This can be exploited by a remote attacker...
GHSA-R4RV-85JG-W4MF Mistune: Arbitrary File Read via Include directive path traversal
Summary A path traversal issue exists in mistune's Include directive when markdown files are processed using md.read. A crafted include path can cause files outside the intended markdown directory to be accessed. Details The issue occurs in the Include.parse method where user-supplied paths are...
PT-2026-56517
Name of the Vulnerable Software and Affected Versions Mistune versions prior to 3.3.0 Description Mistune is a Python Markdown parser with renderers and plugins. The Include.parse function joins and normalizes user-supplied include paths without verifying that the result remains within the intend...
OSV-2026-816 Heap-buffer-overflow in md_process_all_blocks
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=516422428 Crash type: Heap-buffer-overflow READ Crash state: mdprocessallblocks mdparse mdhtml...
PT-2026-47121
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=516422428 Crash type: Heap-buffer-overflow READ Crash state: md process all blocks md parse md html...
Sveltia CMS: Stored XSS in entry summary rendering via entity-decoded HTML
Impact A stored cross-site scripting XSS vulnerability affected entry summary rendering in Sveltia CMS. Entry summaries that allowed limited Markdown were parsed, sanitized, and then HTML entities were decoded. This order allowed specially crafted entity-encoded HTML, such as encoded tags or even...
GHSA-97R8-RF7Q-WMJW Sveltia CMS: Stored XSS in entry summary rendering via entity-decoded HTML
Impact A stored cross-site scripting XSS vulnerability affected entry summary rendering in Sveltia CMS. Entry summaries that allowed limited Markdown were parsed, sanitized, and then HTML entities were decoded. This order allowed specially crafted entity-encoded HTML, such as encoded tags or even...