Note: The CVE and blog post don't exist because we determined this is actually a cloud-only issue.

Access Controls are “Broken” when a user can access resources they are not authorized to access. An attacker can bypass any access control mechanisms in a web application, and gain unauthorized access to resources that are not available with their permissions. 

Broken access control can allow attackers to:
Access resources only accessible to certain users, thus allowing unauthorized access to data
Perform operations on behalf of other users, leading to account takeovers in the worst cases
Attempt privilege escalation
Attempt to take over an account