wpeverest User Registration & Membership Plugin up to 5.1.2 on WordPress membership_ids[] sql injection

Summaryinfo

A vulnerability, which was classified as critical, was found in wpeverest User Registration & Membership Plugin up to 5.1.2 on WordPress. Impacted is an unknown function of the component User Registration Handler. Executing a manipulation of the argument membership_ids[] can lead to sql injection. This vulnerability appears as CVE-2026-1865. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in wpeverest User Registration & Membership Plugin up to 5.1.2 on WordPress. It has been declared as critical. This vulnerability affects some unknown functionality of the component User Registration Handler. The manipulation of the argument membership_ids[] 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 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to SQL Injection via the ‘membership_ids[]’ parameter in all versions up to, and including, 5.1.2 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.

The weakness was presented by Athiwat Tiprasaharn and Itthidej Aramsri. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-1865 since 02/03/2026. 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 04/08/2026). 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

• wpeverest

Name

• User Registration & Membership Plugin

Version

• 5.1.0
• 5.1.1
• 5.1.2

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CPE 2.2info

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

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