CVE-2026-8445

justhtml versions are preserved, so untrusted input that is safe in tohtml — including entity-decoded text e.g. script or text from RCDATA/RAWTEXT-parsed elements like , , , and — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting whe...

EUVD-2026-64659

justhtml versions are preserved, so untrusted input that is safe in tohtml — including entity-decoded text e.g. script or text from RCDATA/RAWTEXT-parsed elements like , , , and — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting whe...

CVE-2026-8445 justhtml before 1.12.0 Sanitizer Bypass via Markdown

justhtml versions are preserved, so untrusted input that is safe in tohtml — including entity-decoded text e.g. script or text from RCDATA/RAWTEXT-parsed elements like , , , and — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting whe...

CVE-2026-8445

justhtml (a Python HTML parsing library) versions <= 1.11.0 are vulnerable to a sanitizer bypass via its to_markdown() method. The root cause is insufficient escaping of HTML-significant characters (angle brackets ) in text nodes during Markdown conversion. While a small set of Markdown metach...

EUVD-2026-64656

justhtml before 3.11.0 contains a cross-site scripting vulnerability where the default sanitizer bypasses event handler removal in selectedcontent projections. Attackers can inject SVG or MathML elements with event handlers that are cloned and reinserted into output without sanitization, enabling...

CVE-2026-74793

justhtml versions before 3.11.0 are affected by a cross-site scripting (XSS) vulnerability in the default sanitizer. The root cause is that event handler removal is bypassed in selectedcontent projections : an attacker can inject SVG or MathML elements carrying event handlers, which are then clon...

SiYuan <= v3.5.9 - Cross Site Scripting

SiYuan v3.5.10 contains a reflected XSS caused by improper sanitization of javascript: href attributes allowing ASCII control characters to bypass prefix checks in SVG sanitizer, letting unauthenticated attackers execute JavaScript via /api/icon/getDynamicIcon. id: CVE-2026-31809 info: name: SiYu...

Stirling-PDF SSRF via Markdown

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. Prior to version 1.1.0, when using the /api/v1/convert/markdown/pdf endpoint to convert Markdown to PDF, the backend calls a third-party tool to process it and includes a sanitizer for security...

Stirling-PDF < 1.1.0 - Server-Side Request Forgery

Stirling-PDF 1.1.0 contains a server side request forgery caused by bypassing the sanitizer in the /api/v1/convert/html/pdf endpoint when processing HTML to PDF conversion, letting attackers perform SSRF, exploit requires local access. id: CVE-2025-55150 info: name: Stirling-PDF 1.1.0 - Server-Si...

PT-2026-79776

justhtml versions are preserved, so untrusted input that is safe in to html — including entity-decoded text e.g. script or text from RCDATA/RAWTEXT-parsed elements like , , , and — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting wh...

CVE-2026-61607 Grav API Plugin: Stored XSS via SVG Upload - API Media Pipeline Bypasses Sanitizer

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.2, the Grav API plugin POST /api/v1/media pipeline in HandlesMediaUploads::processUploadedFile validates an SVG filename extension but does not invoke Security::sanitizeSVG. An...

CVE-2026-76203

Incorrect Behavior Order: Validate Before Canonicalize in the report theme CSS sanitizer in maalfer Pentestify 1.2.0 through 2.3.2 allows an authenticated user to force outbound HTTP requests from other users' browsers, disclosing their IP address and User-Agent, via CSS hex escapes that...

CVE-2026-76203

Pentestify (a penetration testing report tool by maalfer) versions 1.2.0 through 2.3.2 contain a CSS sanitizer bypass in the report theme feature. The root cause is an Incorrect Behavior Order: Validate Before Canonicalize flaw — the sanitizer checks CSS input before resolving hex escape sequence...

CVE-2026-76203 CSS sanitizer bypass in Pentestify report themes allows forced outbound requests

Incorrect Behavior Order: Validate Before Canonicalize in the report theme CSS sanitizer in maalfer Pentestify 1.2.0 through 2.3.2 allows an authenticated user to force outbound HTTP requests from other users' browsers, disclosing their IP address and User-Agent, via CSS hex escapes that...

CVE-2026-76203 CSS sanitizer bypass in Pentestify report themes allows forced outbound requests

Incorrect Behavior Order: Validate Before Canonicalize in the report theme CSS sanitizer in maalfer Pentestify 1.2.0 through 2.3.2 allows an authenticated user to force outbound HTTP requests from other users' browsers, disclosing their IP address and User-Agent, via CSS hex escapes that...

EUVD-2026-62416

Incorrect Behavior Order: Validate Before Canonicalize in the report theme CSS sanitizer in maalfer Pentestify 1.2.0 through 2.3.2 allows an authenticated user to force outbound HTTP requests from other users' browsers, disclosing their IP address and User-Agent, via CSS hex escapes that...

CVE-2026-54570

AngleSharp is a .NET library for parsing angle bracket based hyper-texts. Prior to 1.5.0, MathAnnotationXmlElement in AngleSharp/Mathml/Dom/Internal/MathAnnotationXmlElement.cs is not treated as an HTML integration point when its encoding attribute is text/html or application/xhtml+xml, causing...

CVE-2026-54570 AngleSharp: HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass

AngleSharp is a .NET library for parsing angle bracket based hyper-texts. Prior to 1.5.0, MathAnnotationXmlElement in AngleSharp/Mathml/Dom/Internal/MathAnnotationXmlElement.cs is not treated as an HTML integration point when its encoding attribute is text/html or application/xhtml+xml, causing...

CVE-2026-54570 AngleSharp: HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass

AngleSharp is a .NET library for parsing angle bracket based hyper-texts. Prior to 1.5.0, MathAnnotationXmlElement in AngleSharp/Mathml/Dom/Internal/MathAnnotationXmlElement.cs is not treated as an HTML integration point when its encoding attribute is text/html or application/xhtml+xml, causing...

CVE-2026-54570

AngleSharp versions prior to 1.5.0 fail to assign NodeFlags.HtmlTip to MathAnnotationXmlElement, causing token dispatch to route through foreign-content parsing instead of HTML parsing. Combined with unescaped characters in attribute values, this allows an attacker to hide malicious elements fro...