Vulnerability Description
mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side Request Forgery (SSRF) via the resource_metadata URL extracted from a remote MCP server's WWW-Authenticate header
CVSS Score
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Related Weaknesses (CWE)
References
- https://github.com/geelen/mcp-remote
- https://github.com/geelen/mcp-remote/security/advisories
- https://github.com/playb0t/mcp-remote-oauth-security#readme
- https://github.com/playb0t/mcp-remote-oauth-security/blob/v1.0.1/advisories/F-01
FAQ
What is CVE-2026-51994?
CVE-2026-51994 is a vulnerability with a CVSS score of 9.1 (CRITICAL). mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side Request Forgery (SSRF) via the resource_metadata URL extracted from a remote MCP server's WWW-Authenticate header
How severe is CVE-2026-51994?
CVE-2026-51994 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-51994?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.