MultiVendorX <= 5.0.18 - Authenticated (Customer+) Insecure Direct Object Reference to Refund Request on Arbitrary Orders
- ID
- WPSEC-2026-0112
- Plugin
- MultiVendorX – WooCommerce Multivendor Marketplace AI Powered Solutions (dc-woocommerce-multi-vendor)
- Affected
- from 5.0.0 before 5.0.19
- Remediation
- Update to 5.0.19 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-639
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-22
- Attack surface
- MultiVendorX on WPSec AttackSurface
- Fix released
- Published
Description
The MultiVendorX – WooCommerce Multivendor Marketplace AI Powered Solutions plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions 5.0.0 through 5.0.18 due to the multivendorx_handler_cust_requested_refund function taking the order ID from the view-order URL without checking that the order belongs to the current user. This makes it possible for authenticated attackers, with customer-level access and above, to submit refund requests on other customers' orders, setting their status to refund-requested and overwriting their refund details, when the Marketplace Refund module is enabled.
References
- https://wpsec.com/vuln/WPSEC-2026-0112/
- https://plugins.svn.wordpress.org/dc-woocommerce-multi-vendor/tags/5.0.19/
- https://wordpress.org/plugins/dc-woocommerce-multi-vendor/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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