CVE-2026-54701

01/תיאור (מקור, אנגלית)

Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.30, Markdown Preview Enhanced reads repository-controlled .crossnote/head.html content and passes it through resolvePathsInHeader before inserting it into the head of the preview webview document without removing executable content. Script-capable markup executes while the document loads, before the React application and DOMPurify initialize, and can access acquireVsCodeApi to send messages from the webview to the extension host. Opening a Markdown preview in a malicious repository is sufficient to trigger the injected content, and no additional click within the notification or preview is required. This issue is fixed in version 0.8.30.

02/קישורים8

• github.com/shd101wyy/crossnote/commit/8c55a2ba3365712a1caa4abe‮…
• github.com/shd101wyy/crossnote/pull/444
• github.com/shd101wyy/crossnote/releases/tag/0.9.31
• github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/8‮…
• github.com/shd101wyy/vscode-markdown-preview-enhanced/pull/2323
• github.com/shd101wyy/vscode-markdown-preview-enhanced/releases‮…
• github.com/shd101wyy/vscode-markdown-preview-enhanced/security‮…
• github.com/shd101wyy/vscode-markdown-preview-enhanced/security‮…