The Payment Gateway for Redsys & WooCommerce Lite WordPress plugin before 7.0.2 does not verify the authenticity of incoming payment-provider notifications for one of its payment methods before marking orders as paid, allowing unauthenticated attackers to forge a payment-confirmation callback and complete their own orders without paying.
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
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1