Post-merge hardening from the #13 security review:
- isInitializeRequestBody now delegates to the SDK isInitializeRequest (same
predicate as packages/mcp/http.ts), so a bare {method:'initialize'} with no
id/params no longer triggers the side-effecting login() (audit-spam /
user_sessions growth) before http.ts 400s it.
- Bind the Bearer path to the instance workspace: verifyBearerAccess rejects a
token whose payload.workspaceId != the instance workspace (resolved via
workspaceRepo.findFirst, consistent with the Basic path); optional param so
it's a no-op when unset.
- Close the user-enumeration timing oracle in verifyUserCredentials: the
missing/disabled branch now runs a bcrypt compare against a module-level dummy
hash whose cost (12) matches production saltRounds, so both paths take one
equal-cost bcrypt compare; the exact CREDENTIALS_MISMATCH_MESSAGE is preserved.
- Document the trusted-proxy requirement for the spoofable per-IP brute-force
limiter in .env.example (trustProxy is on; deploy behind a trusted proxy).
- Add real-execution coverage for enforceBasicLoginGate (SSO enforced / EE-MFA
bundled vs not / user-MFA / workspace-enforced-MFA) instead of stubbing the gate.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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