Missing User Warnings
Medium
- Confidence
- 95% confidence
- Finding
- The spec instructs clients to send `x-user-password` as an HTTP header during authentication. Secrets placed in custom headers are commonly captured by reverse proxies, access logs, APM tooling, debugging middleware, and error traces, increasing the chance of credential disclosure beyond the application boundary. In an agentic commerce context, this is especially risky because multiple intermediaries may handle requests and telemetry.
