Is CVE-2026-12426 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-12426?

CVE-2026-12426 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-12426

Description

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.