What is CVE-2025-5276?

CVE-2025-5276 is a high-severity vulnerability in Mcp-Markdownify-Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.4/10. Published 2025-05-29.

How severe is CVE-2025-5276?

High severity. CVSS v3 base score is 7.4 out of 10.

Is CVE-2025-5276 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Mcp-Markdownify-Server

CVE-2025-5276

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (26.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.

Affected products

N/a Mcp-markdownify-server — versions 0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

Frequently asked questions

What is CVE-2025-5276?: CVE-2025-5276 is a high-severity vulnerability in Mcp-Markdownify-Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.4/10. Published 2025-05-29.
How severe is CVE-2025-5276?: High severity. CVSS v3 base score is 7.4 out of 10.
Is CVE-2025-5276 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.