CVE-2025-69196
MEDIUMCVSS v3.1: 6.5 · EPSS: 0.0028 (19.6 percentile)
Source data as of:
At a glance
- Severity
- MEDIUM
- CVSS
- 6.5 v3.1 · NVD
- EPSS
- 0.0028 (19.6 percentile) · FIRST.org
- CISA KEV
- No
- Type
- Incorrect Authorization · NVD CWE
- Attack conditions (CVSS vector)
- NetworkNo privileges · Source: NVD Vector
- Affected vendors
- jlowin
- Published
- 2026-03-16 · Modified: 2026-06-30
- References
- Jump to references (4)
CVSS / EPSS / KEV
Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources
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.
References
Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.