iPaymu Payment Gateway for WooCommerce: A security weakness
iPaymu Payment Gateway for WooCommerce is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- iPaymu Payment Gateway for WooCommerce
- Plugin slug
ipaymu-for-woocommerce- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Jan 07, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Jan 07, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update iPaymu Payment Gateway for WooCommerce to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N