CVE-2026-1321— Membership Plugin – Restrict Content <= 3.2.20 - Unauthenticated Privilege Escalation via 'rcp_level'

Membership Plugin – Restrict Content <= 3.2.20 - Unauthenticated Privilege Escalation via 'rcp_level'

The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.20. This is due to the `rcp_setup_registration_init()` function accepting any membership level ID via the `rcp_level` POST parameter without validating that the level is active or that payment is required. Combined with the `add_user_role()` method which assigns the WordPress role configured on the membership level without status checks, this makes it possible for unauthenticated attackers to register with any membership level, including inactive levels that grant privileged WordPress roles such as Administrator, or paid levels that charge a sign-up fee. The vulnerability was partially patched in version 3.2.18.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

授权机制缺失

WordPress plugin Membership Plugin – Restrict Content 安全漏洞

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Membership Plugin – Restrict Content 3.2.20及之前版本存在安全漏洞，该漏洞源于rcp_setup_registration_init函数接受未经验证的rcp_level参数，

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