CVE-2026-73398 MEDIUM

CVE-2026-73398: WordPress Piraeus Bank WooCommerce Payment Gateway plugin 3.2.0 - Broken Authentication vulnerability

Vendor Papaki (Enartia S.a.)

Product Piraeus Bank WooCommerce Payment Gateway

Weakness CWE-288

Published August 18, 2026

Last update August 18, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

What the vulnerability does

01Description

Unauthenticated Broken Authentication in Piraeus Bank WooCommerce Payment Gateway 3.2.0 versions.

Explanation of Vulnerability in Simple Terms

02Summary

The Piraeus Bank WooCommerce Payment Gateway contains an authentication bypass vulnerability that allows attackers to modify payment transactions without valid credentials. The flaw exists in an alternate authentication path, enabling unauthorized changes to transaction integrity. No user interaction or special privileges are required to exploit this issue.

What an attacker can do

03Attacker Capabilities

Modify payment transaction data without authentication.

Potential impact on your site

04Site Impact

Attackers can alter payment records, potentially causing transaction disputes and revenue loss.

Conditions required to exploit

05Prerequisites

Network access to the payment gateway; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 18, 2026 CVE published

August 18, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-73398 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/288.html AskarLabs — CWE-288 write-up Authentication Bypass Using an Alternate Path or Channel

Related vulnerabilities

Identifiers

CVE CVE-2026-73398

CWE CWE-288

CVSS 6.5 / MEDIUM

Affected versions