CVE-2025-5276: All versions of the package mcp-markdownify-server are vulnerable to Server-Side Request Forgery (SSRF) via the Markdownify.get() function. An...
7.4
CVSS
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.
Classification
CVE ID: CVE-2025-5276
CVSS Base Severity: HIGH
CVSS Base Score: 7.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Problem Types
Server-Side Request Forgery (SSRF)Affected Products
Vendor: n/a
Product: mcp-markdownify-server
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 7.78% (scored less or equal to compared to others)
EPSS Date: 2025-06-07 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-5276https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387
https://github.com/zcaceres/markdownify-mcp/commit/0284aa8f34d32c65e20d8cda2d429b7943c9af03
https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts%23L20C17-L20C29