Bug 2448179 (CVE-2025-69196) - CVE-2025-69196 fastmcp: FastMCP: Improper token issuance due to incorrect resource parameter handling
Summary: CVE-2025-69196 fastmcp: FastMCP: Improper token issuance due to incorrect res...
Keywords:
Status: NEW
Alias: CVE-2025-69196
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-16 19:02 UTC by OSIDB Bzimport
Modified: 2026-03-17 12:34 UTC (History)
24 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-03-16 19:02:01 UTC 
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.
Note You need to log in before you can comment on or make changes to this bug.