PT-2026-39330

Name of the Vulnerable Software and Affected Versions mistune versions prior to 3.2.1 Description In the HTMLRenderer.heading function within src/mistune/renderers/html.py, the id attribute of heading tags is constructed by directly concatenating the value into the HTML without sanitization. When...

CVE-2026-44264

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

CVE-2026-44264 Weblate is vulnerable to XSS via crafted Markdown

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

CVE-2026-44264 Weblate is vulnerable to XSS via crafted Markdown

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

@tdurieux/anonymous_github Vulnerable to XSS via Unsanitized GitHub Repository Content Rendering in Anonymous GitHub Origin

Summary Anonymous GitHub fetches repository content e.g., markdown files from GitHub's API and renders it without sanitization. On the client side, markdown is parsed with marked with sanitize: false and injected into the DOM via $sce.trustAsHtml + ng-bind-html, bypassing AngularJS's built-in XSS...

CVE-2026-3346 Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw

IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted...

CVE-2026-3346

Summary: CVE-2026-3346 affects IBM Langflow Desktop 1.6.0–1.8.4. Affected component is the Markdown rendering pipeline via rehypeRaw, where unsafe handling allows an authenticated user to inject arbitrary JavaScript through a stored XSS vector, potentially leading to credentials disclosure within...

CVE-2026-3346 Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw

IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted...

Security Bulletin: Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw

Summary A stored cross-site scripting XSS vulnerability in Langflow allows attackers to inject and execute arbitrary HTML/JavaScript through the Playground event-streaming and Markdown rendering pipeline due to unsafe use of rehypeRaw without sanitization, potentially leading to session theft,...

CVE-2026-41318

AnythingLLM prior to v1.12.1 is vulnerable to stored DOM-based XSS via an unsafe image rendering rule and unsanitized chart captions in the Chartable component. The vulnerability arises because renderMarkdown(...) output is sanitized in all call sites except Chartable, where LLM-generated caption...

PT-2026-34844

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to version 1.12.1, AnythingLLM's in-chat markdown renderer has an unsafe custom rule for images that interpolates the markdown image's alt text into an HTML alt="..."...

CVE-2026-35600

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday which allows and tags,...

CVE-2026-39425 MaxKB: Stored XSS via Unsanitized html_rander Tags in Markdown Rendering

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a Stored Cross-Site Scripting XSS vulnerability that allows authenticated users to inject arbitrary HTML and JavaScript into the Application prologue Opening Remarks field by wrapping malicious payloads in tags...

CVE-2026-39425

CVE-2026-39425 affects MaxKB (enterprise AI assistant). Versions 2.7.1 and earlier allow Stored XSS via unsanitized tags in the Application prologue, stored through /admin/api/workspace/{workspace_id}/application and rendered by the frontend via innerHTML, enabling persistent XSS and potential s...

CVE-2026-39423 Stored XSS via Eval Injection in EchartsRander Component

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an Eval Injection vulnerability in the Markdown rendering engine that allows any user capable of interacting with the AI chat interface to execute arbitrary JavaScript in the browsers of other users, including...

CVE-2026-35600 Vikunja has HTML Injection via Task Titles in Overdue Email Notifications

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday which allows and tags,...

Vikunja has HTML Injection via Task Titles in Overdue Email Notifications

Summary Task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday which allows and tags, injected Markdown constructs produce phishing links and tracking pixels in...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the markdown to HTML rendering. An attacker can inject arbitrary scripts by crafting malicious links or image links in markdown content, which may be executed in the context of users viewing the rendered HTM...

PT-2026-30283

Name of the Vulnerable Software and Affected Versions Hugo versions 0.60.0 through 0.159.1 Description Hugo, a static site generator, has an issue where links and image links in the default markdown to HTML renderer are not properly escaped. Users who trust their Markdown content or have custom...

CVE-2026-33742

Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Product notes fields in Invoice Ninja v5.13.0 allow raw HTML via Markdown rendering, enabling stored XSS. The Markdown parser output was not sanitized with purify::clean before being included in...