CVE-2026-12426 supercleanse CVE debrief

Who should care

Users of the Members – Membership & User Role Editor Plugin for WordPress should be aware of this vulnerability and take immediate action to protect their sites by updating the plugin to the latest version and restricting access to sensitive posts as needed. This vulnerability allows unauthenticated attackers to determine the existence and exact count of access-restricted posts and infer content through per-page pagination, which can be used to inform keywords and content contained within those hidden restricted posts. Therefore, it is crucial for organizations to assess their exposure and implement necessary mitigations promptly to prevent potential data breaches or unauthorized access to sensitive information. The CVE record was published on 2026-07-11T04:17:16.503Z and has not been modified since then, indicating that the vulnerability details have been stable and confirmed by the CVE and NVD sources.

Technical summary

The Members – Membership & User Role Editor Plugin for WordPress is vulnerable to Sensitive Information Exposure. This vulnerability allows unauthenticated attackers to determine the existence and exact count of access-restricted posts and infer content through per-page pagination. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity. The CVE record was published on 2026-07-11T04:17:16.503Z and has not been modified since then, indicating that the vulnerability details have been stable and confirmed by the CVE and NVD sources. Organizations should review the official CVE record and NVD detail for further information on the vulnerability and recommended mitigations.

Defensive priority

Medium priority given the CVSS score of 5.3 and the potential for information exposure. Organizations should prioritize updating the plugin and reviewing access controls for sensitive posts to mitigate the vulnerability effectively. Additionally, monitoring for suspicious activity related to post access can help detect potential exploitation attempts. The vulnerability affects users of the Members – Membership & User Role Editor Plugin for WordPress, who should be aware of this vulnerability and take immediate action to protect their sites by updating the plugin to the latest version and restricting access to sensitive posts as needed. This vulnerability allows unauthenticated attackers to determine the existence and exact count of access-restricted posts and infer content through per-page pagination, which can be used to inform keywords and content contained within those hidden restricted posts. Therefore, it is crucial for organizations to assess their exposure and implement necessary mitigations promptly to prevent potential data breaches or unauthorized access to sensitive information. The CVE record was published on 2026-07-11T04:17:16.503Z and has not been modified since then, indicating that the vulnerability details have been stable and confirmed by the CVE and NVD sources. Organizations should review the official CVE record and NVD detail for further information on the vulnerability and recommended mitigations. By taking proactive steps to address this vulnerability, organizations can reduce the risk of exploitation and protect their sensitive information from unauthorized access or disclosure. The vulnerability affects a widely used plugin for WordPress, which may increase the likelihood of targeted attacks. Therefore, it is essential for organizations to prioritize the update and review of their plugin configurations to ensure the security and integrity of their sites and sensitive data. The CVE and NVD sources provide valuable information on the vulnerability, its impact, and recommended mitigations, which organizations should leverage to inform their remediation efforts and ensure effective protection against potential exploitation attempts. By exp,

Recommended defensive actions

• Update the Members – Membership & User Role Editor Plugin to the latest version
• Review and restrict access to sensitive posts
• Monitor for suspicious activity related to post access
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Review compensating controls for exposed systems while remediation is scheduled and verified.

Evidence notes

Evidence from the CVE record and NVD detail indicate a vulnerability in the Members – Membership & User Role Editor Plugin for WordPress. The CVE record was published on 2026-07-11T04:17:16.503Z and has not been modified since then. The vulnerability allows unauthenticated attackers to determine the existence and exact count of access-restricted posts and infer content through per-page pagination. Defenders should verify the affected plugin versions, review access controls for sensitive posts, and monitor for suspicious activity related to post access.

Official resources