What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-11 · updated 2026-07-14
• Weakness: CWE-200

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.

Affected products

• supercleanse Members – Membership & User Role Editor Plugin: through 3.2.22

References

• https://plugins.trac.wordpress.org/browser/members/tags/3.2.19/inc/functions-content-permissions.php#L337
• https://plugins.trac.wordpress.org/browser/members/tags/3.2.19/inc/functions-private-site.php#L42
• https://plugins.trac.wordpress.org/browser/members/tags/3.2.22/inc/functions-content-permissions.php#L337
• https://plugins.trac.wordpress.org/browser/members/tags/3.2.22/inc/functions-private-site.php#L42
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3594293%40members%2Ftrunk&old=3552545%40members%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9c3557a6-aa72-496c-8515-2f6055de6b22?source=cve

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