Tokens & traps: Seven common OAuth vulnerabilities (plus mitigations)
In the world of modern web applications, the OAuth flow is our trusty gatekeeper, enabling seamless logins and secure data sharing. But its flexibility (designed to handle myriad use cases) is also its Achilles’ heel. A tiny misstep in URI validation or a missing state check can turn a robust token exchange into an open invitation for attackers, leading to serious OAuth vulnerabilities that compromise user data and application security.