CVE-2026-12426 MEDIUM

CVE-2026-12426: Members <= 3.2.22 - Unauthenticated Sensitive Information Disclosure via REST API Pagination Side Channel

Vendor Supercleanse
Product Members – Membership & User Role Editor Plugin
Weakness CWE-200 · Info exposure
Published July 11, 2026
Last update July 11, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

The Members – Membership & User Role Editor Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.2.22 via the members_filter_protected_posts_for_rest. This makes it possible for unauthenticated attackers to extract determine the existence and exact count of access-restricted posts, and use per-page pagination as a boolean oracle to infer keywords and content contained within those hidden restricted posts.

Explanation of Vulnerability in Simple Terms

02Summary

The Members plugin for WordPress contains an information exposure vulnerability in versions up to 3.2.22. The plugin fails to properly restrict access to sensitive data, allowing unauthenticated attackers to read information they should not have access to. This affects user data and site configuration details. Site administrators should update the plugin immediately.

What an attacker can do

03Attacker Capabilities

Read sensitive user and site information without logging in.

Potential impact on your site

04Site Impact

User data and site configuration may be exposed to anyone visiting your site.

Conditions required to exploit

05Prerequisites

Network access to the WordPress site; no authentication or user interaction required.

Key dates

06Disclosure timeline

July 11, 2026 CVE published

Related vulnerabilities

08Related CVE