The development
Cycode disclosed an OAuth vulnerability in the MCP Python SDK where a malicious MCP server could obtain sensitive OAuth material associated with a legitimate identity provider.
The authority gap
Downstream authentication may be valid while the resulting action still lacks legitimate enterprise authority.
The Authrizd approach
Authrizd treats identity and credentials as inputs, not authority itself. Authentication can be completely correct while authority is completely wrong.
Enterprise implication
AI capability should not silently expand enterprise authority. Consequential effects should be independently adjudicated and evidenced before execution.
Sources
https://cycode.com/blog/mcp-python-sdk-oauth-account-takeover/
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