CVE-2026-12426: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in supercleanse Members – Membership & User Role Editor Plugin
The Members – Membership & User Role Editor Plugin for WordPress has a vulnerability (CVE-2026-12426) that allows unauthenticated attackers to infer the existence and exact count of access-restricted posts. This is due to sensitive information exposure via the members_filter_protected_posts_for_rest function in all versions up to and including 3.2.22. Attackers can use pagination as a boolean oracle to infer keywords and content within restricted posts.
AI Analysis
Technical Summary
CVE-2026-12426 is a sensitive information exposure vulnerability (CWE-200) in the Members – Membership & User Role Editor Plugin for WordPress, affecting all versions up to and including 3.2.22. The issue arises from the members_filter_protected_posts_for_rest function, which allows unauthenticated attackers to determine the existence and exact count of access-restricted posts. Pagination can be exploited as a boolean oracle to infer keywords and content of these hidden posts. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity. There is no vendor advisory or patch information available at this time.
Potential Impact
An unauthenticated attacker can extract information about restricted posts, including their existence and exact count. By leveraging pagination, the attacker can infer keywords and content within these restricted posts, leading to exposure of sensitive information. There is no indication of impact on integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting access to the REST API endpoints related to members_filter_protected_posts_for_rest or applying other access controls to limit unauthenticated access to sensitive data.
CVE-2026-12426: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in supercleanse Members – Membership & User Role Editor Plugin
Description
The Members – Membership & User Role Editor Plugin for WordPress has a vulnerability (CVE-2026-12426) that allows unauthenticated attackers to infer the existence and exact count of access-restricted posts. This is due to sensitive information exposure via the members_filter_protected_posts_for_rest function in all versions up to and including 3.2.22. Attackers can use pagination as a boolean oracle to infer keywords and content within restricted posts.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12426 is a sensitive information exposure vulnerability (CWE-200) in the Members – Membership & User Role Editor Plugin for WordPress, affecting all versions up to and including 3.2.22. The issue arises from the members_filter_protected_posts_for_rest function, which allows unauthenticated attackers to determine the existence and exact count of access-restricted posts. Pagination can be exploited as a boolean oracle to infer keywords and content of these hidden posts. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity. There is no vendor advisory or patch information available at this time.
Potential Impact
An unauthenticated attacker can extract information about restricted posts, including their existence and exact count. By leveraging pagination, the attacker can infer keywords and content within these restricted posts, leading to exposure of sensitive information. There is no indication of impact on integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting access to the REST API endpoints related to members_filter_protected_posts_for_rest or applying other access controls to limit unauthenticated access to sensitive data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-16T17:04:21.226Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a51b98168715ace430ae496
Added to database: 07/11/2026, 03:33:21 UTC
Last enriched: 07/11/2026, 03:48:22 UTC
Last updated: 07/11/2026, 04:27:53 UTC
Views: 4
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