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 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.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
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

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) Todas las versiones del paquete mcp-markdownify-server son vulnerables a Server-Side Request Forgery (SSRF) mediante la función Markdownify.get(). Un atacante puede manipular un mensaje que, una vez accedido por el host MCP, puede invocar las herramientas de conversión de páginas web a Markdown, de búsquedas de Bing a Markdown y de YouTube a Markdown para enviar solicitudes y leer las respuestas a las URL controladas por el atacante, lo que podría filtrar información confidencial.

29 May 2025, 14:15

Type	Values Removed	Values Added
References	~~() https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387 -~~	() https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387 -

29 May 2025, 05:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-29 05:15

Updated : 2026-06-17 09:47

NVD link : CVE-2025-5276

Mitre link : CVE-2025-5276

CVE.ORG link : CVE-2025-5276

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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