md-fileserver: Stored/Reflected XSS when viewing Markdown (raw HTML allowed)

Summary A cross-site scripting XSS vulnerability exists in the application’s Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML—including tags—is processed and injected into the resulting page without sanitization, allowing arbitrary JavaScript execution ...

GHSA-32Q2-HHR5-6QVV md-fileserver: Stored/Reflected XSS when viewing Markdown (raw HTML allowed)

Summary A cross-site scripting XSS vulnerability exists in the application’s Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML—including tags—is processed and injected into the resulting page without sanitization, allowing arbitrary JavaScript execution ...

PT-2026-42631

Description Several filters in the twig/ extras packages are registered with is safe = 'all', which tells Twig's autoescaper to treat their output as safe in every context html, js, css, url, .... The output of these filters is plain text or HTML markup, neither of which is safe in every escaping...

PT-2026-42586

Summary A cross-site scripting XSS vulnerability exists in the application’s Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML—including tags—is processed and injected into the resulting page without sanitization, allowing arbitrary JavaScript execution ...

PT-2026-42666

Name of the Vulnerable Software and Affected Versions md-fileserver versions prior to 1.10.3 Description A cross-site scripting XSS issue exists in the Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML, such as tags or event handlers e.g., , is processed...

RHSA-2026:19366 Red Hat Security Advisory: python-markdown security update

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RHSA-2026:19155 Red Hat Security Advisory: python-markdown security update

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Important: Red Hat Security Advisory: python-markdown security update

An update for python-markdown is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerabilit...

python-markdown: denial of service via malformed HTML-like sequences

A flaw was found in Python-Markdown. Parsing crafted markdown content containing malformed HTML-like sequences causes html.parser.HTMLParser to raise an unhandled AssertionError. This unhandled exception allows an attacker to cause an application crash and potentially disclose sensitive informati...

Important: Red Hat Security Advisory: python-markdown security update

An update for python-markdown is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerabili...

python-markdown: denial of service via malformed HTML-like sequences

A flaw was found in Python-Markdown. Parsing crafted markdown content containing malformed HTML-like sequences causes html.parser.HTMLParser to raise an unhandled AssertionError. This unhandled exception allows an attacker to cause an application crash and potentially disclose sensitive informati...

semantic-compressor

Semantic Compressor Store the recipe of a database, not...

EUVD-2026-30835

The /api/v1/autotranslate.translateMessage endpoint in versions 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12 allows any authenticated user to retrieve the full content of any message from any room private groups, direct messages, channels by simply providing the target message ID...

RHEL 9 : python-markdown (RHSA-2026:19366)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:19366 advisory. Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic da...

RHEL 10 : python-markdown (RHSA-2026:19155)

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:19155 advisory. Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic...

ALSA-2026:19366 Important: python-markdown security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...

Important: python-markdown security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...

ALSA-2026:19155 Important: python-markdown security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...

md4c:fuzz-mdhtml: Heap-buffer-overflow in md_build_attribute

Project: https://github.com/mity/md4c.git Detailed Report: https://oss-fuzz.com/testcase?key=6428197876203520 Project: md4c Fuzzing Engine: libFuzzer Fuzz Target: fuzz-mdhtml Job Type: libfuzzerasanmd4c Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x76e0d3ee0e04 Crash...

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...