Unauthenticated Payment Notification Vulnerability in PayPay for WooCommerce Plugin
CVE-2026-82215

5.9MEDIUM

Key Information:

Vendor

WordPress
Status
Payment Gateway Paypay For WooCommerce
Vendor
CVE Published:
11 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82215?

The PayPay for WooCommerce WordPress plugin versions ranging from 0.5 to 0.9.3 is vulnerable due to its failure to authenticate payment notifications effectively. This oversight allows malicious actors, who possess the store's merchant identifier, to manipulate order statuses at will. Attackers can potentially mark orders as paid or cancel them, leading to serious financial implications for businesses relying on this integration for payment processing.

Affected Version(s)

Payment Gateway PayPay for WooCommerce 0.5 <= 0.9.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-82215 - Proof of Concept

References

https://wpscan.com/vulnerability/c7703a51-9d5d-4483-b214-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pedro Pinho
WPScan
.