CVE-2026-12951 is an SQL Injection vulnerability in the Dc Woocommerce Multi Vendor plugin for WordPress, specifically in the 'order_by' parameter of the /multivendorx/v1/compliance/report-abuse REST endpoint. Versions up to and including 5.0.18 are affected. The vulnerability arises from improper neutralization of special elements in an SQL command, allowing authenticated users with vendor-level access or higher to inject additional SQL queries. This can lead to unauthorized extraction of sensitive database information. The CVSS score is 6.5, indicating a medium severity risk.
The MultiVendorX – WooCommerce Multivendor Marketplace AI Powered Solutions plugin for WordPress is vulnerable to generic SQL Injection via the 'order_by' parameter in all versions up to, and including, 5.0.9 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This vulnerability is exploitable by any authenticated subscriber-level user when the plugin's store approval setting is configured to automatically approve store owners (described as the default), as this allows any logged-in user to self-register as a store_owner via the public Stores REST endpoint, thereby obtaining the edit_stores capability required to reach the vulnerable transactions endpoint.
The MultiVendorX – Empower Your WooCommerce Store with a Dynamic Multivendor Marketplace – Build the Next Amazon, eBay, Etsy plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the delete_table_rate_shipping_row function in all versions up to, and including, 4.2.19. This makes it possible for unauthenticated attackers to delete Table Rates that can impact the shipping cost calculations.
The MultiVendorX – The Ultimate WooCommerce Multivendor Marketplace Solution plugin for WordPress is vulnerable to Limited Local File Inclusion in all versions up to, and including, 4.2.14 via the tabname parameter. This makes it possible for unauthenticated attackers to include PHP files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where PHP files can be uploaded and included
The MultiVendorX – The Ultimate WooCommerce Multivendor Marketplace Solution plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.2.4. This is due to missing or incorrect nonce validation on several functions in api/class-mvx-rest-controller.php. This makes it possible for unauthenticated attackers to update vendor account details, create vendor accounts, and delete arbitrary users via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
The MultiVendorX – The Ultimate WooCommerce Multivendor Marketplace Solution plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'mvx_sent_deactivation_request' function in all versions up to, and including, 4.2.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to send a canned email to the site's administrator asking to delete the profile of an arbitrary vendor.
The MultiVendorX – The Ultimate WooCommerce Multivendor Marketplace Solution plugin for WordPress is vulnerable to privilege escalation/de-escalation and account takeover due to an insufficient capability check on the update_item_permissions_check and create_item_permissions_check functions in all versions up to, and including, 4.2.0. This makes it possible for unauthenticated attackers to change the password of any user with the vendor role, create new users with the vendor role, and demote other users like administrators to the vendor role.
The MultiVendorX Marketplace – WooCommerce MultiVendor Marketplace Solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘hover_animation’ parameter in all versions up to, and including, 4.1.11 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.