The LatePoint WordPress plugin before 5.7.5 does not validate the client-supplied value that determines how much is charged for a booking against the amounts the service and site actually allow, allowing an unauthenticated visitor to make the amount due resolve to zero and obtain a confirmed appointment and a recorded order without completing any payment.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1