CVE-2026-12251

Ultimate Member · Ultimate Member

The Ultimate Member WordPress plugin is vulnerable to improper privilege management, which could allow an attacker to gain unauthorized access or elevate their permissions.

Executive summary

An improper privilege management flaw in the Ultimate Member plugin for WordPress creates a high risk of unauthorized access and potential privilege escalation.

Vulnerability

This vulnerability involves improper privilege management, classified as CWE-269, where the application fails to correctly validate or enforce user role restrictions.

Business impact

If successfully exploited, this vulnerability could allow a malicious actor to gain administrative access or perform actions reserved for higher-privileged accounts. With a CVSS score of 8.1, the potential for unauthorized administrative control presents a significant threat to the security and operational continuity of the affected WordPress site.

Remediation

Immediate Action: Update the Ultimate Member plugin to version 2.12.1 or later to resolve the privilege management flaw.

Proactive Monitoring: Audit user account activity and privilege changes to identify any unauthorized modifications or suspicious administrative actions.

Compensating Controls: Implement strict access control lists and restrict administrative access to known, trusted IP addresses while the update is being deployed.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Privilege management flaws can lead to complete site takeover. Administrators should verify their current version of Ultimate Member and apply the update to version 2.12.1 immediately to prevent unauthorized privilege escalation.