CVE-2026-44899

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...

CVE-2026-44899

CVE-2026-44899 – Mistune Image Directive CSS Injection exploits a prefix-only regex in the Image directive’s width/height validation. Before 3.2.1, values starting with digits (e.g., 100vw;…) pass _num_re.match() and are written into style="width:...;" or style="height:...;" without escaping, ena...

CVE-2026-44899

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...

CVE-2026-44899 Mistune Image Directive CSS Injection Vulnerability

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...

CVE-2026-44899 Mistune Image Directive CSS Injection Vulnerability

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...

EUVD-2026-31992

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...

CVE-2026-44899 Mistune Image Directive CSS Injection Vulnerability

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...

CVE-2026-44896

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-2026-44896 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-2026-44896

Mistune (Python Markdown parser) contains an XSS flaw in the image figure directive. In versions 3.2.0 and earlier, render_figure() concatenates figclass and figwidth into HTML attributes without escaping, allowing attribute injection and XSS even when HTMLRenderer(escape=True) is enabled, becaus...

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-2026-44896 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...

Velocity.js 安全漏洞

Velocity.js is a JavaScript implementation of the Apache Velocity template engine developed by Eward. Versions of Velocity.js 2.1.5 and earlier contained security vulnerabilities. These vulnerabilities stemmed from prototype pollution during the processing of set directives. Attackers could modif...

mistune 跨站脚本漏洞

Mistune is a fast and powerful Python Markdown parser developed by Hsiaoming Yang. Versions of Mistune prior to 3.2.1 contained a cross-site scripting vulnerability. This vulnerability stemmed from the Image directive plugin using regular expressions that only matched prefixes to validate the wid...

CVE-2026-41149

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

Access of Resource Using Incompatible Type ('Type Confusion')

Overview Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type 'Type Confusion' via improper handling of numeric User directives in container configuration. An attacker can gain elevated privileges by supplying a crafted image with an /etc/passwd file that...

PT-2026-44150

Name of the Vulnerable Software and Affected Versions Symfony versions prior to 5.4.31 Description The cleanup function in SymfonyComponentYamlParser contains regular expressions with overlapping quantifiers, specifically in the pattern used to strip the %YAML directive header. This leads to...

CISA Adds Seven Known Exploited Vulnerabilities to Catalog

CISA has added seven new vulnerabilities to its Known Exploited Vulnerabilities KEV Catalog, based on evidence of active exploitation. CVE-2008-4250link is external Microsoft Windows Buffer Overflow Vulnerability CVE-2009-1537link is external Microsoft DirectX NULL Byte Overwrite Vulnerability...

ANT-2026-HY56VRSB · nginx · Heap

heap-buffer-overflow high CVE-2026-27654 Severity Claude high · Security research firm critical · Maintainer high Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Calif. ANT-2026-HY56VRSB: Heap buffer overflow in...

DEBIAN-CVE-2026-8711

NGINX JavaScript has a vulnerability when the jsfetchproxy directive is configured with at least one client-controlled NGINX variable for example, $http, $arg, $cookie and a location invoking the ngx.fetch operation from NGINX JavaScript. An unauthenticated attacker can exploit this vulnerability...