OAuth is a popular authorization protocol allowing third-party services to access user resources without revealing credentials. Common vulnerabilities include client secret exposure, CSRF, open redirects, and improper token usage. Security can be enhanced by proper client secret management, using the state parameter for CSRF protection, validating redirect URIs, and ensuring token confidentiality. OAuth 2.0's PKCE provides additional security for public clients without a client secret. OpenID Connect builds upon OAuth for user authentication.
Table of contents
OAuth Security: Complete GuideIntroductionOAuth Grant TypesIdentifying OAuth AuthenticationVulnerabilities in Client ApplicationsVulnerabilities in the OAuth ServiceSort: