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CVE

GHSA-rcfx-77hg-w2wv

FastMCP updated to MCP 1.23+ due to CVE-2025-66416
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CVE

GHSA-rcfx-77hg-w2wv

FastMCP updated to MCP 1.23+ due to CVE-2025-66416

There was a recent CVE report on MCP: https://nvd.nist.gov/vuln/detail/CVE-2025-66416. 

FastMCP does not use any of the affected components of the MCP SDK directly. However, FastMCP versions prior to 2.14.0 did allow MCP SDK versions <1.23 that were vulnerable to CVE-2025-66416. Users should upgrade to FastMCP 2.14.0 or later.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/jlowin/fastmcp/security/advisories/GHSA-rcfx-77hg-w2wv, https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-9h52-p55h-vw2f, https://nvd.nist.gov/vuln/detail/CVE-2025-66416, https://github.com/jlowin/fastmcp

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0%
EPSS Percentile
0%
Introduced Version
0
Fix Available
2.14.0

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