This article presents a real-world security assessment case where a login page, initially thought to be a simple weak-password target, led to a significant Swagger API documentation leak. The discovery was made by analyzing the SPA (Single Page Application) routing structure, which revealed hidden endpoints and exposed API schemas. The case underscores that security testing must go beyond obvious vulnerabilities like weak credentials. It highlights the need to examine client-side code, routing configurations, and server responses for misconfigurations. For security professionals, this serves as a reminder to adopt a holistic approach to web application testing. The article also discusses the implications of exposed API documentation, which can reveal sensitive business logic and data structures. This case is a valuable addition to the knowledge base of penetration testers and security engineers.
A security case study on discovering API documentation leaks via SPA routing, highlighting the importance of thorough web application testing.