Threats affecting pkg:npm/mcp-markdownify-server

Versions of the package mcp-markdownify-server before 1.0.0 are vulnerable to Server-Side Request Forgery (SSRF) via the Markdownify.get() function. An attacker can craft a prompt that, once accessed by the MCP host, can invoke the webpage-to-markdown, bing-search-to-markdown, and youtube-to-markdown tools to issue requests and read the responses to attacker-controlled URLs, potentially leaking sensitive information.

Versions of mcp-markdownify-server before 1.0.0 contain a vulnerability that allows external parties to access files or directories via the get-markdown-file tool. An attacker can craft a prompt that causes the server to read arbitrary files from the host system. This vulnerability is identified as CVE-2025-5273 and has a high severity rating with a CVSS score of 8.2.