CVE-2026-91017

LOW CVSS 3.1: 3.7 EPSS 0.10%
Updated Sep 18, 2026
Unknown
Parameter Value
CVSS 3.7 (LOW)
Affected Versions before 1.8.9
Type CWE-345 (Insufficient Verification of Data), CWE-345 Insufficient Verification of Data Authenticity
Vendor Unknown
Public PoC No

The Robokassa payment gateway for Woocommerce WordPress plugin before 1.8.9 does not verify the authenticity of incoming payment notifications when its non-default deferred-payment feature is enabled, allowing unauthenticated attackers to forge a notification and mark arbitrary WooCommerce orders as paid or on-hold without payment or a valid signature.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult 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

Vulnerable Products

unknown:robokassa payment gateway for woocommerce