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arcade-mcp-server vulnerabilities

Vulnerabilities published for arcade-mcp-server in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerability: 1

  1. CVE-2025-66454

    Medium · CVSS 6.5EPSS 0.33%Fix available

    Arcade MCP Default Hardcoded Worker Secret Allows Full Unauthorized Access to All HTTP MCP Worker Endpoints

    Arcade MCP allows you to to create, deploy, and share MCP Servers. Prior to 1.5.4, the arcade-mcp HTTP server uses a hardcoded default worker secret ("dev") that is never validated or overridden during normal server startup. As a result, any unauthenticated attacker who knows this default key can forge valid JWTs and fully bypass the FastAPI authentication layer. This grants remote access to all worker endpoints—including tool enumeration and tool invocation—without credentials. This vulnerability is fixed in 1.5.4.

    arcade-mcp-serverPython
    • Update to 1.9.1
    Published Updated
    Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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