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https://github.com/Sea-Haven-Industries/sh-mcp.git
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Adam Moussa
c5b7550eaa
Two confirmed medium findings from the agentic security review:
- Fail-open SH_MCP_ENV: config defaulted to 'local' when the var was unset,
so a deploy that forgot SH_MCP_ENV=aws would silently run LocalAuthProvider
and accept static dev bearer tokens (dev-finance-admin -> finance:admin).
Now fail-closed: SH_MCP_ENV must be explicitly 'local' or 'aws' or the
server refuses to start. Plus an independent guard in LocalAuthProvider
that refuses to construct in an AWS runtime (AWS_LAMBDA_FUNCTION_NAME /
AWS_EXECUTION_ENV present), regardless of the env flag.
- Finance egress redaction gap: redactDeep only wholesale-masked a sensitive
key when its value was a scalar; an object/array under a sensitive key was
recursed into, letting a bare nested value (e.g. {account:{number:...}})
escape the keyword-gated pattern matcher. Now the entire subtree under a
sensitive key is masked. No current finance tool emitted such shapes (all
flat strings), so this closes a latent hole in the universal safety net.
+4 tests (subtree redaction, AWS-runtime guard). 411 pass; coverage gate green.
Review also produced lows (memo free-text digits, unsalted argsHash,
unauth /openapi.json by-design, session-cap no-reset by-design) tracked
separately; 0 confirmed critical/high — review verdict PASS.
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