Time-of-check Time-of-use (TOCTOU) Race Condition

Apache streampipes is vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition. The vulnerability arises from insufficient synchronization during user registration, allowing multiple simultaneous requests to check and register a user using the same email address. Attackers exploit this by creating multiple identical user accounts before the email address is officially registered, leading to corruption in user management.