CVE-2026-32871

A flaw was found in FastMCP. An authenticated attacker can exploit a path traversal vulnerability in the buildurl method of the RequestDirector class. By manipulating path parameters in an OpenAPI operation, an attacker can use directory traversal sequences ../ to bypass the intended API prefix...

PT-2026-29424

Name of the Vulnerable Software and Affected Versions FastMCP versions affected versions not specified Description The OpenAPIProvider in FastMCP is susceptible to an authenticated Server-Side Request Forgery SSRF vulnerability due to insufficient URL encoding of path parameters. Specifically, th...