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.
References (3)
Core 3
Core References
Various Sources
https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts%23L20C17-L20C29
Third Party Advisory
https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387
Scores
CVSS v3
7.4
EPSS
0.0021
EPSS Percentile
43.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (2)
n/a/mcp-markdownify-server
npm/mcp-markdownify-server
0npm
Published
May 29, 2025
Tracked Since
Feb 18, 2026