Payment Confirmation Forgery in Eupago Gateway for WooCommerce by WordPress
CVE-2026-91075

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Eupago Gateway For WooCommerce
Vendor
CVE Published:
3 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-91075?

The Eupago Gateway for WooCommerce plugin versions 4.5.0 through 4.7.5 is vulnerable to a significant security flaw that allows attackers to bypass payment confirmation verification. This vulnerability enables unauthenticated malicious actors to manipulate incoming payment-confirmation webhook requests. As a result, they can falsely mark pending orders as paid without completing any actual transactions, potentially leading to financial loss and abuse of the online storefront.

Affected Version(s)

Eupago Gateway For Woocommerce 4.5.0 <= 4.7.5

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-2026-91075 - Proof of Concept

References

https://wpscan.com/vulnerability/065557b8-a29f-4c59-9289-...
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

Seongwon Lee
WPScan
.