api-auth-and-jwt-abuse

Testing JWT authentication for privilege escalation involves inspecting token claims, signing algorithms, key identifiers, and issuer/audience validation. You analyze proxy-header assumptions and hidden privilege fields to detect authorization boundary failures during authorized security assessments.

JWT algorithm confusion occurs when token validation trusts manipulated signing algorithms or remote key lookups. Analyzing remote key trust exposes API security abuse paths where attackers reuse cross-app tokens or spoof headers to bypass authentication boundaries.

Bypassing API rate limits involves testing weak rate-limit logic through batch abuse and header spoofing. You inspect fragile request identity signals and proxy metadata to discover abuse paths that manipulate bearer token trust boundaries.

Yes, this approach works for authorized testing of API keys and bearer tokens. It analyzes API authentication trust boundaries to expose abuse paths in header-based identity systems, token claims, and cross-app token reuse scenarios.

Limitations of testing API authentication trust boundaries include the requirement for authorized testing environments only. Complex remote key lookup systems and proxy-header assumptions may require extensive manual verification to validate detected abuse paths.