CVE-2026-0656

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.

PUBLISHED Reserved 2026-01-06 | Published 2026-01-07 | Updated 2026-01-07 | Assigner Wordfence

Problem types

CWE-862 Missing Authorization

Product status

Timeline

Credits

Teerachai Somprasong finder

References

www.wordfence.com/...-ec67-4212-9051-1f7465bbfde2?source=cve

plugins.trac.wordpress.org/...eway.php?marks=316-336,370-380

plugins.trac.wordpress.org/...29657%40ipaymu-for-woocommerce

cve.org (CVE-2026-0656)

nvd.nist.gov (CVE-2026-0656)

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