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CVE-2026-0656

8.2 · HIGH

The iPaymu Payment Gateway for WooCommerce plugin for WordPress is vulnerable to Missing Authentication in all versions up to, and including, 2.0.2 via the 'check_ipaymu_response' function.

Published Jan 7, 2026CWE-862EPSS 0.34%

Overview

CVE-2026-0656 is a high-severity vulnerability. It was published on January 7, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The iPaymu Payment Gateway for WooCommerce plugin for WordPress is vulnerable to Missing Authentication in all versions up to, and including, 2.0.2 via the 'check_ipaymu_response' function. This is due to the plugin not validating webhook request authenticity through signature verification or origin checks. This makes it possible for unauthenticated attackers to mark WooCommerce orders as paid by sending crafted POST requests to the webhook endpoint without any payment occurring, as well as enumerate order IDs and obtain valid order keys via GET requests, exposing customer order PII including names, addresses, and purchased products.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/ipaymu-for-woocommerce/tags/2.0.2/gateway.php?marks=316-336,370-380#L316Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3429657%40ipaymu-for-woocommerce&new=3429657%40ipaymu-for-woocommerceRefwww.wordfence.com/threat-intel/vulnerabilities/id/7e639aed-ec67-4212-9051-1f7465bbfde2?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-0656?

CVE-2026-0656 is a high-severity vulnerability. It was published on January 7, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-0656?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-0656?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-0656?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-0656 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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