The WP Events Manager WordPress plugin before 2.2.5 does not verify that an incoming payment notification originates from the site's configured merchant account, nor that the paid amount matches the booking total, allowing unauthenticated users to mark any booking as paid without a legitimate payment reaching the merchant, including other users' bookings.
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
Weakness Type (CWE)
Vulnerable Products
unknown:wp events manager