CVE-2026-54011 Open WebUI: Stored XSS in Mermaid Markdown Preview

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6,Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with...

CVE-2026-56696

OpenHarness /issue and /prcomments slash commands lack remoteinvocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/prcomments....

CVE-2026-56696

CVE-2026-56696 affects OpenHarness; the /issue and /pr_comments slash commands lack remote_invocable=False protection. This allows remote attackers to write attacker-controlled Markdown into project context files (.openharness/issue.md and .openharness/pr_comments.md). The injected content is sub...

EUVD-2026-38469

OpenHarness /issue and /prcomments slash commands lack remoteinvocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/prcomments....

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...

Linux Distros Unpatched Vulnerability : CVE-2026-48988

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when typographer: true is enabled, due to quadratic On^2...

Linux Distros Unpatched Vulnerability : CVE-2026-48822

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a stored Cross-Site Scripting XSS vulnerability in the Markdown-to-HTML conversion...

UBUNTU-CVE-2026-48988

markdown-it is a Markdown parser. Versions 14.1.1 and below contain a...

UBUNTU-CVE-2026-22551

In Eclipse Theia versions prior to 1.71.0, the AI chat rendered Markdo...

[Eclipse Theia] Indirect Prompt Injection via Adversarial Workspace File and Directory Names in AI Chat

In Eclipse Theia versions prior to 1.71.0, the AI chat agent processed workspace file and directory names as part of its prompt context without distinguishing them from system instructions. An attacker could craft a malicious repository with adversarial directory or file names that, when analyzed...

CVE-2026-44688

In Eclipse Theia versions prior to 1.71.0, the AI chat agent processed workspace file and directory names as part of its prompt context without distinguishing them from system instructions. An attacker could craft a malicious repository with adversarial directory or file names that, when analyzed...

CVE-2026-48988

markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when typographer: true is enabled, due to quadratic On^2 processing in the smartquotes rule. The issue stems from repeatedly modifying strings with replaceAt, which performs On slicing and...

CVE-2026-48988

markdown-it is affected by a Denial-of-Service vulnerability (CVE-2026-48988) when typographer: true is enabled. Versions 14.1.1 and earlier process smartquotes with a quadratic time complexity due to repeated uses of replaceAt(), causing high CPU usage on quote-heavy inputs. The issue can degrad...

CVE-2026-48822

Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a stored Cross-Site Scripting XSS vulnerability in the Markdown-to-HTML conversion process used in the Bookmark Description field. An authenticated user can inject a malicious javascript: URI inside a Markdown link. The...

CVE-2026-48822

Shaarli (versions ≤ 0.16.1) contains a stored XSS in the Bookmark Description field when a malicious javascript: URI is injected via Markdown reference links. The root cause is in BookmarkMarkdownFormatter.php: filterProtocols uses a regex that catches inline links but does not inspect Markdown r...

CVE-2026-48822 Shaarli has Stored Cross-Site Scripting (XSS) via Markdown Reference Links

Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a stored Cross-Site Scripting XSS vulnerability in the Markdown-to-HTML conversion process used in the Bookmark Description field. An authenticated user can inject a malicious javascript: URI inside a Markdown link. The...

CVE-2026-48822

Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a stored Cross-Site Scripting XSS vulnerability in the Markdown-to-HTML conversion process used in the Bookmark Description field. An authenticated user can inject a malicious javascript: URI inside a Markdown link. The...

CVE-2026-48591 Stored XSS via unescaped HTML attribute values in earmark

Improper Neutralization of Script in Attributes in a Web Page vulnerability in pragdave earmark allows stored cross-site scripting via unescaped HTML attribute values. 'Elixir.Earmark.Transform':makeatt1/2 in lib/earmark/transform.ex splices attribute values verbatim between two literal " bytes: ...

Open WebUI: Stored XSS in Mermaid Markdown Preview

Summary Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working paylo...

PT-2026-50535

Name of the Vulnerable Software and Affected Versions Shaarli versions prior to 0.16.2 Description A stored Cross-Site Scripting XSS issue exists in the Markdown-to-HTML conversion process used in the Bookmark Description field. An authenticated user can inject a malicious javascript: URI inside ...