offensive-jwt

Testing JWT algorithm confusion requires analyzing token implementations for weak signing and misconfigurations like alg:none or RS256/HS256 downgrade attacks. You can identify these vulnerabilities by providing a real token to evaluate header and claim validation flaws.

Checking JWT header and claim validation involves verifying the presence and enforcement of kid, jku, x5u, jwk, iss, aud, exp, iat, and nbf. Proper analysis detects missing claim checks and token binding weaknesses across server-side and client-side validation scenarios.

Detecting JWKS cache issues and token binding weaknesses requires analyzing JWT implementations for misconfigurations in key handling. Security testing identifies these flaws by evaluating how applications process token headers and validate claims during authentication.

Yes, you can use JWT security testing for both web and mobile applications that use tokens for authentication, session management, or API access. The analysis covers server-side and client-side validation scenarios to identify misconfigurations and weak verification.

To get remediation guidance for weak JWT signing, you analyze the token to identify vulnerabilities and then apply actionable fixes. Secure token design examples are provided to correct misconfigurations, algorithm weaknesses, and missing claim validations.