JWT Implementation Flaws

Vulnerability Details

The application's JWT implementation contains security flaws such as weak signing algorithms, missing signature verification, or improper token handling.

Attackers could forge tokens, escalate privileges, impersonate other users, or bypass authentication entirely.

Use strong signing algorithms (RS256 or ES256). Always verify signatures. Validate all claims including expiration. Store tokens securely. Implement token revocation mechanisms.

• https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/06-Session_Management_Testing/10-Testing_JSON_Web_Tokens