Vulnerability Description
PDF Reader MCP is a Model Context Protocol server for reading PDF documents. In versions 2.2.0 and later prior to 3.0.1, when `MCP_TRANSPORT=http` enables the opt-in HTTP server, `@sylphx/pdf-reader-mcp` reads `MCP_API_KEY` and logs that `X-API-Key` authentication is enabled but never validates the `X-API-Key` header on incoming requests. The `/mcp` endpoint consequently accepts unauthenticated clients. With the default bind address of `0.0.0.0`, any client able to reach the port can invoke every PDF tool and read any PDF the server process can open on the host, despite the misleading authentication-enabled startup log. URL-based sources additionally permit limited server-side request forgery; private and loopback destinations are blocked by default unless `--allow-private-ips` is set. The default `stdio` transport is unaffected. This issue is fixed in version 3.0.1.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c
- https://github.com/SylphxAI/anymd/pull/332
- https://github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84
- https://github.com/SylphxAI/anymd/tree/v3.0.1
FAQ
What is CVE-2026-62264?
CVE-2026-62264 is a vulnerability with a CVSS score of 7.5 (HIGH). PDF Reader MCP is a Model Context Protocol server for reading PDF documents. In versions 2.2.0 and later prior to 3.0.1, when `MCP_TRANSPORT=http` enables the opt-in HTTP server, `@sylphx/pdf-reader-m...
How severe is CVE-2026-62264?
CVE-2026-62264 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-62264?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.