AVideo - Incomplete Fix for CVE-2026-27568: Stored XSS via Markdown `javascript:` URI Bypasses ParsedownSafeWithLinks Sanitization

Summary The fix for CVE-2026-27568 GHSA-rcqw-6466-3mv7 introduced a custom ParsedownSafeWithLinks class that sanitizes raw HTML and tags in comments, but explicitly disables Parsedown's safeMode. This creates a bypass: markdown link syntax text is processed by Parsedown's inlineLink method, which...

Cross-site Scripting (XSS)

Overview wwbn/avideo is an Audio and Video Platform or simply "A Video Platform". Affected versions of this package are vulnerable to Cross-site Scripting XSS in the markDownToHTML function. An attacker can execute arbitrary JavaScript in the context of another user's browser session by crafting ...

CVE-2026-33066

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the backend renderREADME function uses lute.New without calling SetSanitizetrue, allowing raw HTML embedded in Markdown to pass through unmodified. The frontend then assigns the rendered HTML to innerHTML without any...

CVE-2026-27625

Stirling-PDF (local web app) is affected in all versions prior to 2.5.2. The vulnerability resides in the /api/v1/convert/markdown/pdf endpoint, where user-supplied ZIP entries are extracted without path checks, enabling path traversal and arbitrary file write by any authenticated user (stirlingp...

CVE-2026-27625 Stirling-PDF Zip Slip: Arbitrary File Write via Path Traversal in Markdown-to-PDF ZIP Extraction

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary worki...

EUVD-2026-13638

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary worki...

CVE-2026-27625 Stirling-PDF Zip Slip: Arbitrary File Write via Path Traversal in Markdown-to-PDF ZIP Extraction

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary worki...

CVE-2026-27625 Stirling-PDF Zip Slip: Arbitrary File Write via Path Traversal in Markdown-to-PDF ZIP Extraction

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary worki...

CVE-2026-33066 SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the backend renderREADME function uses lute.New without calling SetSanitizetrue, allowing raw HTML embedded in Markdown to pass through unmodified. The frontend then assigns the rendered HTML to innerHTML without any...

CVE-2026-33066

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the backend renderREADME function uses lute.New without calling SetSanitizetrue, allowing raw HTML embedded in Markdown to pass through unmodified. The frontend then assigns the rendered HTML to innerHTML without any...

PT-2026-26592

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary worki...

SiYuan 跨站脚本漏洞

SiYuan is a privacy-oriented personal knowledge management system developed by SiYuan. Versions of SiYuan 3.6.0 and earlier had a cross-site scripting vulnerability. This vulnerability stemmed from the renderREADME function not properly cleaning HTML within Markdown tags, which could lead to...

PT-2026-26784

Name of the Vulnerable Software and Affected Versions AVideo versions up to and including 26.0 Description A flaw exists in AVideo that allows for stored cross-site scripting XSS through markdown link injection. The fix for a previous issue introduced a custom class, ParsedownSafeWithLinks,...

CVE-2026-32750 SiYuan importStdMd: unvalidated localPath imports arbitrary host directories as persistent notes

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, POST /api/import/importStdMd passes the localPath parameter directly to model.ImportFromLocalPath with zero path validation. The function recursively reads every file under the given path and permanently stores their...

JustHTML has a Sanitizer Bypass (in Markdown)

Summary tomarkdown does not sufficiently escape text content that looks like HTML. As a result, untrusted input that is safe in tohtml can become raw HTML in Markdown output. This is not specific to tokenizer raw-text states like , , or , although those states can trigger the behavior. The root...

Cross-site Scripting (XSS)

Overview justhtml is an A pure Python HTML5 parser that just works. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the tomarkdown function. An attacker can inject arbitrary HTML content by supplying specially crafted input that includes HTML-significant characters...

GHSA-3RCM-VJRC-P45J JustHTML has a Sanitizer Bypass (in Markdown)

Summary tomarkdown does not sufficiently escape text content that looks like HTML. As a result, untrusted input that is safe in tohtml can become raw HTML in Markdown output. This is not specific to tokenizer raw-text states like , , or , although those states can trigger the behavior. The root...

GHSA-VCCX-P757-PV6H mo has a XSS via inline SVG script tags in Markdown rendering

Summary When rendering Markdown files containing inline SVG elements with tags, the embedded JavaScript is executed in the browser. This is due to rehype-raw passing raw HTML including SVG through to the DOM without sanitization. PoC html alert1 Embedding the above in a Markdown file opened with ...

mo has a XSS via inline SVG script tags in Markdown rendering

Summary When rendering Markdown files containing inline SVG elements with tags, the embedded JavaScript is executed in the browser. This is due to rehype-raw passing raw HTML including SVG through to the DOM without sanitization. PoC html alert1 Embedding the above in a Markdown file opened with ...

Linux Distros Unpatched Vulnerability : CVE-2026-1090

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.6 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowe...