CVE-2025-69196

Description

FastMCP is the standard framework for building MCP applications. Prior to version 2.14.2, the server does not properly respect the resource parameter submitted by the client in the authorization and token request. Instead of issuing the token explicitly for the MCP server, the token is issued for the base_url passed to the OAuthProxy during initialization. This issue has been patched 2.14.2.

Risk Information

Base Score

6.5

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS Score

Exploitation Probability

0.013

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2025-69196 are fixed in Python-fastmcp 2.14.2	Windows
Vulnerabilities CVE-2025-69196 are fixed in Python-fastmcp for linux 2.14.2	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234