CVE-2026-91017: CWE-345 Insufficient Verification of Data Authenticity in Robokassa payment gateway for Woocommerce
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.
AI Analysis
Technical Summary
The Robokassa payment gateway for WooCommerce WordPress plugin prior to version 1.8.9 contains an insufficient verification of data authenticity vulnerability (CWE-345). Specifically, when the deferred-payment feature is enabled, the plugin does not properly verify incoming payment notifications, enabling unauthenticated attackers to forge notifications. This can lead to unauthorized modification of order statuses to paid or on-hold without legitimate payment confirmation or valid cryptographic signatures.
Potential Impact
The vulnerability allows attackers to manipulate order statuses in WooCommerce by forging payment notifications. This can result in orders being marked as paid or on-hold without actual payment, potentially causing financial loss or operational disruption for merchants using the affected plugin versions.
Mitigation Recommendations
Upgrade the Robokassa payment gateway plugin to version 1.8.9 or later, where this vulnerability is fixed. Since the affected versions are prior to 1.8.9, applying this official fix will remediate the issue. No other mitigation guidance is provided in the available data.
CVE-2026-91017: CWE-345 Insufficient Verification of Data Authenticity in Robokassa payment gateway for Woocommerce
Description
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.
CVSS v3.1
Score 3.7low
Affected software
Robokassa payment gateway for Woocommerce
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Robokassa payment gateway for WooCommerce WordPress plugin prior to version 1.8.9 contains an insufficient verification of data authenticity vulnerability (CWE-345). Specifically, when the deferred-payment feature is enabled, the plugin does not properly verify incoming payment notifications, enabling unauthenticated attackers to forge notifications. This can lead to unauthorized modification of order statuses to paid or on-hold without legitimate payment confirmation or valid cryptographic signatures.
Potential Impact
The vulnerability allows attackers to manipulate order statuses in WooCommerce by forging payment notifications. This can result in orders being marked as paid or on-hold without actual payment, potentially causing financial loss or operational disruption for merchants using the affected plugin versions.
Mitigation Recommendations
Upgrade the Robokassa payment gateway plugin to version 1.8.9 or later, where this vulnerability is fixed. Since the affected versions are prior to 1.8.9, applying this official fix will remediate the issue. No other mitigation guidance is provided in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-14T16:40:14.381Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aab941b55bf5e2cf5eb08c1
Added to database: 09/17/2026, 07:17:47 UTC
Last enriched: 09/17/2026, 07:31:35 UTC
Last updated: 09/17/2026, 16:49:47 UTC
Views: 12
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