AZL-88400 CVE-2026-44897 affecting package python-mistune for versions less than 3.2.1-1

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in...

AZL-88406 CVE-2026-44899 affecting package python-mistune for versions less than 3.2.1-1

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the Image directive plugin validates the :width: and :height: options with a regex compiled as numre = re.compiler"^\d+?:.\d?". When the validated value is not a plain integer, renderblockimage inserts it directly int...

AZL-88397 CVE-2026-44708 affecting package python-mistune for versions less than 3.2.1-1

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math $...$ and block math $$...$$ by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is...

UBUNTU-CVE-2026-44897

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in...

EUVD-2026-31995

Mistune is a Python Markdown parser with renderers and plugins. 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 format...

CVE-2026-44898

Mistune is a Python Markdown parser with renderers and plugins. 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 format...

CVE-2026-44898

Mistune is a Python Markdown parser with renderers and plugins. 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 format...

CVE-2026-44708

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math $...$ and block math $$...$$ by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is...

CVE-2026-44896 Mistune: XSS via unescaped figclass/figwidth in Figure directive

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when...

CVE-2026-44898: Improper Neutralization of Input During Web Page Generation

Mistune is a Python Markdown parser with renderers and plugins. 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 format...

CVE-2026-44708: Improper Neutralization of Input During Web Page Generation

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math $...$ and block math $$...$$ by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is...

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

Project: https://github.com/mity/md4c.git Detailed Report: https://oss-fuzz.com/testcase?key=5671318203990016 Project: md4c Fuzzing Engine: afl Fuzz Target: fuzz-mdhtml Job Type: aflasanmd4c Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x7b6a4b1e0758 Crash State:...

Open WebUI has Stored XSS in Banner Component via Improper Sanitization Order

Summary A Stored Cross-Site Scripting XSS vulnerability exists in the Banner component due to an improper sanitization order specifically, DOMPurify is executed before the marked library. This vulnerability allows a compromised or malicious administrator to plant a malicious payload in the global...

GHSA-HJPH-F4MC-WX4C Duplicate Advisory: Mistune has a ReDoS in LINK_TITLE_RE that allows denial of service via crafted Markdown input

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-8mp2-v27r-99xp. This link is maintained to preserve external references. Original Description Summary Denial-of-Service DoS vulnerability in the Mistune Markdown parser. The issue occurs when processing speciall...

CVE-2026-41680

A flaw was found in marked, a markdown parser and compiler. An unauthenticated attacker can exploit this Denial of Service DoS vulnerability by providing a specific 3-byte input sequence a tab, a vertical tab, and a newline. This input triggers an infinite recursion loop during parsing, leading t...

Linux Distros Unpatched Vulnerability : CVE-2026-41680

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service DoS vulnerability exists in marked. By providing a specific 3-byte...

CVE-2026-41680

Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service DoS vulnerability exists in marked. By providing a specific 3-byte input sequence a tab, a vertical tab, and a newline \x09\x0b\n—an unauthenticated attacker can trigger an infinite recursion loop during...

CVE-2026-41680 Marked: OOM Denial of Service via Infinite Recursion in marked Tokenizer

Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service DoS vulnerability exists in marked. By providing a specific 3-byte input sequence a tab, a vertical tab, and a newline \x09\x0b\n—an unauthenticated attacker can trigger an infinite recursion loop during...

CVE-2026-41680

Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service DoS vulnerability exists in marked. By providing a specific 3-byte input sequence a tab, a vertical tab, and a newline \x09\x0b\n—an unauthenticated attacker can trigger an infinite recursion loop during...

CVE-2026-40890

The package github.com/gomarkdown/markdown is a Go library for parsing Markdown text and rendering as HTML. Processing a malformed input containing a character anywhere in the remaining text with a SmartypantsRenderer will lead to Out of Bounds read or a panic. This vulnerability is fixed with...