Wiz
Vulnerability DatabaseGHSA-rcfx-77hg-w2wv

GHSA-rcfx-77hg-w2wv: 
Model Context Protocol vulnerability analysis and mitigation

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.

Source: NVD

Related Model Context Protocol vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-0621HIGH8.7
  • ChainguardChainguard
  • kibana-9.2
NoYesJan 05, 2026
CVE-2025-66416HIGH7.6
  • WolfiWolfi
  • open-webui
NoYesDec 02, 2025
CVE-2025-66414HIGH7.6
  • WolfiWolfi
  • opensearch-dashboards-2
NoYesDec 02, 2025
GHSA-c2jp-c369-7pvxHIGH7.3
  • Model Context ProtocolModel Context Protocol
  • fastmcp
NoYesOct 29, 2025
GHSA-rcfx-77hg-w2wvHIGHN/A
  • Model Context ProtocolModel Context Protocol
  • fastmcp
NoYesDec 26, 2025

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo