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Vulnerabilities

Vulnerability · 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.

Published May 29, 2025 · catalog updated Aug 5, 2026 · Versions of the package

Check if you run it

No confirmed exploitation is on record for CVE-2025-5276. EPSS is 0.40%. Act only if a listed version of Versions of the package is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Versions of the package).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Version ranges on file
Affected products
vendor n/a mcp-markdownify-server 0 <1.0.0

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor n/a mcp-markdownify-server 0 <1.0.00 <1.0.0

How to fix CVE-2025-5276

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-5276. EPSS is 0.40%. Act only if a listed version of Versions of the package is installed.

Which versions are affected?

Compare what you have installed with n/a mcp-markdownify-server 0 <1.0.0 0 <1.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 29, 2025 · EUVD

    Detected

    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 se

  2. Aug 5, 2026 · EUVD

    Updated

    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 se

Sources

  • CVE.orgVulnerability recordCVE-2025-5276

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-5276

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-16365

    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, an

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.