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.

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Advisories

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Fixes

Solution

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Workaround

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History

Fri, 11 Sep 2026 12:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-640
CWE-648

Fri, 11 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-345
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 11 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
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.
Title WC PayPay Gateway 0.5 - 0.9.3 - Unauthenticated Payment Bypass via Unverified Webhook
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-11T12:07:23.949Z

Reserved: 2026-08-28T08:40:57.171Z

Link: CVE-2026-82215

cve-icon Vulnrichment

Updated: 2026-09-11T12:05:34.475Z

cve-icon NVD

Status : Received

Published: 2026-09-11T11:16:55.077

Modified: 2026-09-11T11:16:55.077

Link: CVE-2026-82215

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-11T12:30:08Z

Weaknesses