WCMP Multi Vendor Plugin up to 5.0.18 on WordPress Report Abuse report-abuse order_by sql injection

Summaryinfo

A vulnerability was found in WCMP Multi Vendor Plugin up to 5.0.18. It has been declared as critical. Impacted is an unknown function of the file /multivendorx/v1/compliance/report-abuse of the component Report Abuse. Executing a manipulation of the argument order_by can lead to sql injection. This vulnerability appears as CVE-2026-12951. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in WCMP Multi Vendor Plugin up to 5.0.18 and classified as critical. This vulnerability affects some unknown processing of the file /multivendorx/v1/compliance/report-abuse of the component Report Abuse. The manipulation of the argument order_by with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Dc Woocommerce Multi Vendor plugin for WordPress is vulnerable to SQL Injection via the 'order_by' parameter of the /multivendorx/v1/compliance/report-abuse REST endpoint in versions up to and including 5.0.18. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query — the value is concatenated directly into an ORDER BY clause where esc_sql() (which only neutralizes characters needed to break out of quoted string literals) provides no protection. This makes it possible for authenticated attackers, with vendor-level access and above (users granted the 'edit_stores' capability), to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The advisory is available at wordfence.com. This vulnerability was named CVE-2026-12951 since 06/22/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/02/2026). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• WCMP

Name

• Multi Vendor Plugin

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.0.11
• 5.0.12
• 5.0.13
• 5.0.14
• 5.0.15
• 5.0.16
• 5.0.17
• 5.0.18

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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