The WPForms Lite WordPress plugin before 2.0.2.2 does not verify server-side that a payment was completed before accepting a submission on forms using its PayPal Commerce gateway, allowing unauthenticated visitors to submit paid forms without paying. The form's confirmation is delivered and its notification emails are sent even though no order exists at the payment provider and no payment is recorded.
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:wpforms lite