Description
The ePayco Payment Gateway for WooCommerce WordPress plugin before 8.4.7 does not properly verify the authenticity of payment confirmation requests, allowing unauthenticated attackers to mark orders as paid without a valid gateway signature.
Published: 2026-09-04
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized payment confirmation via unauthenticated requests
Action: Patch
AI Analysis

Impact

The ePayco Payment Gateway for WooCommerce plugin does not validate the authenticity of payment confirmation requests. As a result an attacker can mark customer orders as paid without any valid gateway signature. The flaw is an authentication bypass, identified as CWE‑345, and can lead to fraudulent order fulfillment and potential monetary loss.

Affected Systems

Any WordPress website that installs the ePayco Payment Gateway for WooCommerce plugin with a version earlier than 8.4.7 is vulnerable. The vendor for this plugin is listed only as ePayco Payment Gateway for WooCommerce, and no further version enumeration is provided beyond the “< 8.4.7” threshold.

Risk and Exploitability

The CVSS score of 5.3 places this vulnerability at moderate severity. The EPSS score of less than 1% indicates a very low probability of exploitation. It is not listed in the CISA KEV catalog. According to the description it is inferred that attackers can remotely trigger the flaw by sending crafted HTTP requests to the payment confirmation endpoint, thereby bypassing all authentication checks.

Generated by OpenCVE AI on September 4, 2026 at 22:26 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the ePayco Payment Gateway for WooCommerce plugin to version 8.4.7 or newer
  • Disable or restrict the plugin’s payment‑confirmation endpoint so that only the gateway can access it until the patch is applied
  • Implement regular monitoring of order status changes and reconcile payments to detect any unauthorized status updates

Generated by OpenCVE AI on September 4, 2026 at 22:26 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 04 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-345
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 04 Sep 2026 10:15:00 +0000

Type Values Removed Values Added
Description The ePayco Payment Gateway for WooCommerce WordPress plugin before 8.4.7 does not properly verify the authenticity of payment confirmation requests, allowing unauthenticated attackers to mark orders as paid without a valid gateway signature.
Title ePayco Payment Gateway for WooCommerce < 8.4.7 - Unauthenticated Payment Confirmation Bypass
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-04T18:13:23.469Z

Reserved: 2026-09-01T04:02:21.737Z

Link: CVE-2026-84043

cve-icon Vulnrichment

Updated: 2026-09-04T18:13:19.640Z

cve-icon NVD

Status : Deferred

Published: 2026-09-04T10:17:13.457

Modified: 2026-09-08T19:09:21.310

Link: CVE-2026-84043

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T22:30:07Z

Weaknesses
  • CWE-345

    Insufficient Verification of Data Authenticity