{"cve":"CVE-2026-0656","nvd":{"published":"2026-01-07T12:17:07.867","modified":"2026-06-17T10:11:09.580","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2},"cwes":["CWE-862"],"references":["https://plugins.trac.wordpress.org/browser/ipaymu-for-woocommerce/tags/2.0.2/gateway.php?marks=316-336,370-380#L316","https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3429657%40ipaymu-for-woocommerce&new=3429657%40ipaymu-for-woocommerce","https://www.wordfence.com/threat-intel/vulnerabilities/id/7e639aed-ec67-4212-9051-1f7465bbfde2?source=cve"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2026-0656","score":0.00344,"percentile":0.27964,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}