CVE-2026-82215: CWE-345 Insufficient Verification of Data Authenticity in Payment Gateway PayPay for WooCommerce
The Payment Gateway PayPay for WooCommerce WordPress plugin from 0.5 to 0.9.3 does not verify the authenticity of the payment notifications it receives before acting on them, allowing unauthenticated attackers who know the store's merchant identifier to mark arbitrary orders as paid, or to cancel or fail them.
AI Analysis
Technical Summary
CVE-2026-82215 is a vulnerability in the Payment Gateway PayPay for WooCommerce plugin affecting versions from 0.5 up to and including 0.9.3. The plugin does not perform sufficient verification of the authenticity of payment notifications it receives. As a result, attackers who know the merchant identifier can send forged notifications to alter order statuses arbitrarily, such as marking unpaid orders as paid or canceling legitimate orders.
Potential Impact
The vulnerability impacts the integrity of order processing within affected WooCommerce stores using the PayPay payment gateway plugin. Attackers can manipulate order states without authentication, potentially causing financial discrepancies or disruption of order fulfillment. There is no confidentiality or availability impact reported. The CVSS score is 5.9 (medium severity) reflecting the high impact on integrity but requiring high attack complexity and no privileges.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users of the Payment Gateway PayPay for WooCommerce plugin versions 0.5 through 0.9.3 should monitor the vendor's advisories for updates. Until a fix is released, consider disabling the plugin or implementing additional verification controls at the application or network level to validate payment notifications before processing.
CVE-2026-82215: CWE-345 Insufficient Verification of Data Authenticity in Payment Gateway PayPay for WooCommerce
Description
The Payment Gateway PayPay for WooCommerce WordPress plugin from 0.5 to 0.9.3 does not verify the authenticity of the payment notifications it receives before acting on them, allowing unauthenticated attackers who know the store's merchant identifier to mark arbitrary orders as paid, or to cancel or fail them.
CVSS v3.1
Score 5.9medium
Affected software
Payment Gateway PayPay for WooCommerce
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82215 is a vulnerability in the Payment Gateway PayPay for WooCommerce plugin affecting versions from 0.5 up to and including 0.9.3. The plugin does not perform sufficient verification of the authenticity of payment notifications it receives. As a result, attackers who know the merchant identifier can send forged notifications to alter order statuses arbitrarily, such as marking unpaid orders as paid or canceling legitimate orders.
Potential Impact
The vulnerability impacts the integrity of order processing within affected WooCommerce stores using the PayPay payment gateway plugin. Attackers can manipulate order states without authentication, potentially causing financial discrepancies or disruption of order fulfillment. There is no confidentiality or availability impact reported. The CVSS score is 5.9 (medium severity) reflecting the high impact on integrity but requiring high attack complexity and no privileges.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users of the Payment Gateway PayPay for WooCommerce plugin versions 0.5 through 0.9.3 should monitor the vendor's advisories for updates. Until a fix is released, consider disabling the plugin or implementing additional verification controls at the application or network level to validate payment notifications before processing.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-28T08:40:57.171Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa3dff291cc7f3848109ff7
Added to database: 09/11/2026, 11:03:14 UTC
Last enriched: 09/11/2026, 11:18:08 UTC
Last updated: 09/11/2026, 16:03:35 UTC
Views: 8
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