User Registration & Membership Plugin up to 5.2.2 on WordPress Registration Form privileges management

Summaryinfo

A vulnerability classified as critical has been found in User Registration & Membership Plugin up to 5.2.2. Affected is an unknown function of the component Registration Form. The manipulation leads to privileges management. This vulnerability is listed as CVE-2026-11961. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in User Registration & Membership Plugin up to 5.2.2. It has been rated as critical. This issue affects some unknown processing of the component Registration Form. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The User Registration & Membership WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.

It is possible to read the advisory at wpscan.com. The identification of this vulnerability is CVE-2026-11961 since 06/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 5.2.3 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Name

• User Registration & Membership Plugin

Version

• 5.2.0
• 5.2.1
• 5.2.2

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CPE 2.2info

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