Medium severity · published Jul 11, 2026
CVE-2026-12426
Members <= 3.2.22 - Unauthenticated Sensitive Information Disclosure via REST API Pagination Side Channel
5.3
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MM
Members – Membership & User Role Editor Plugin · supercleanse
through 3.2.22 · source: vendor
Affected product
MM
Members – Membership & User Role Editor Plugin
supercleanse
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12426
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12426
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/members/tags/3.2.19/inc/functions-content-permissions.php#L337
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/members/tags/3.2.19/inc/functions-private-site.php#L42
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/members/tags/3.2.22/inc/functions-content-permissions.php#L337
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/members/tags/3.2.22/inc/functions-private-site.php#L42
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3594293%40members%2Ftrunk&old=3552545%40members%2Ftrunk&sfp_email=&sfph_mail=
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/9c3557a6-aa72-496c-8515-2f6055de6b22?source=cve
More from Members – Membership & User Role Editor Plugin
5.3
CVE-2024-11008
Members <= 3.2.10 - Unauthenticated Content Restriction Bypass to Sensitive Information Exposure