Markdownify MCP Server allows attackers to read arbitrary files
All versions of the package mcp-markdownify-server are vulnerable to Files or Directories Accessible to External Parties via the get-markdown-file tool. An attacker can craft a prompt that, once accessed by the MCP host, will allow it to read arbitrary files from the host running the server.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | mcp-markdownify-server | <= 0.0.1 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-5273
- https://github.com/zcaceres/markdownify-mcp/commit/3a6b202d088ef7acb8be84bc09515f41a2b1a9df
- https://github.com/zcaceres/markdownify-mcp
- https://github.com/zcaceres/markdownify-mcp/blob/3667bd4765c0e49684ce22df268d02dd478a7f3b/src/Markdownify.ts#L94
- https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249193
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-552- Platform
- npm
- Package
mcp-markdownify-server- Disclosed
- 29.05.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-22v8-p7h2-rj7p - CC BY 4.0
Vulnerability history: mcp-markdownify-server
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 05.2025 09.2025
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 2
Disclosures per year
- 2025: 3
- 2026: 0
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