Crucial Exams

ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

During a penetration test of a SaaS platform, testers authenticated as a standard user and issued GET /api/v1/users/4872. By incrementing the numeric ID, they retrieved other customers' profiles without error. What API design weakness does this behavior indicate?

  • Lack of rate limiting, permitting brute-force enumeration of endpoints

  • Excessive data exposure caused by returning unfiltered user attributes

  • Absence of per-object authorization checks, leading to broken object-level authorization

  • Broken function-level authorization that allows access to privileged endpoints

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Architecture and Design
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