CVE-2025-5276 Information

Description

All versions of the package mcp-markdownify-server 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.

Reference

https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts%23L20C17-L20C29 https://github.com/zcaceres/markdownify-mcp/commit/0284aa8f34d32c65e20d8cda2d429b7943c9af03 https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387 https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387