Payment Gateway Authentication Flaw in ePayco for WooCommerce by WordPress
CVE-2026-84043

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Epayco Payment Gateway For WooCommerce
Vendor
CVE Published:
4 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-84043?

The ePayco Payment Gateway for WooCommerce WordPress plugin prior to version 8.4.7 features a critical flaw in its payment confirmation request verification process. This vulnerability allows unauthenticated attackers to fraudulently mark orders as paid without a valid signature from the payment gateway, potentially leading to financial losses for businesses and customers alike. It is essential for users of this plugin to upgrade to the latest version to mitigate this security risk.

Affected Version(s)

ePayco Payment Gateway for WooCommerce 0 < 8.4.7

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-2026-84043 - Proof of Concept

References

https://wpscan.com/vulnerability/96599654-1d7f-4ff0-a4b4-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pedro Pinho
WPScan
.