CVE-2025-66106 identifies a missing authorization vulnerability in the Essential Plugin Featured Post Creative, specifically affecting versions up to 1.5.5. The root cause is an incorrectly configured access control mechanism that fails to properly verify user permissions before allowing access to certain plugin features. This flaw enables users with limited privileges (PR:L) to perform actions or access data that should be restricted, without requiring any user interaction (UI:N). The vulnerability is exploitable remotely over the network (AV:N), which increases its attack surface. According to the CVSS 3.1 vector, the impact is limited to confidentiality (C:L) with no impact on integrity (I:N) or availability (A:N). This suggests that sensitive information could be exposed or accessed by unauthorized users, but the vulnerability does not allow modification or disruption of services. The vulnerability affects WordPress sites using the Featured Post Creative plugin, which is commonly employed to enhance content presentation. No patches or known exploits are currently documented, indicating that the issue is newly disclosed and not yet actively exploited. The vulnerability's medium severity rating (CVSS 4.3) reflects the moderate risk posed by unauthorized access without privilege escalation or service disruption. Organizations relying on this plugin should assess their exposure and prepare to apply security updates once released.

For European organizations, the primary impact of CVE-2025-66106 is unauthorized access to certain features or data within the Featured Post Creative plugin, potentially leading to limited confidentiality breaches. This could expose sensitive content or internal information managed through the plugin, undermining data privacy and compliance with regulations such as GDPR. Although the vulnerability does not affect data integrity or availability, unauthorized access could facilitate further reconnaissance or social engineering attacks. Organizations with multi-user WordPress environments, especially those with contributors or editors having limited privileges, are at higher risk. The impact is more pronounced for sectors relying heavily on content management systems, including media, education, and e-commerce. Failure to address this vulnerability could result in reputational damage and regulatory scrutiny if sensitive information is exposed. However, the lack of known exploits and the medium severity rating suggest that immediate catastrophic consequences are unlikely, but proactive mitigation remains essential.

1. Immediately review and restrict user roles and permissions within WordPress to ensure that only trusted users have access to the Featured Post Creative plugin features. 2. Disable or uninstall the Featured Post Creative plugin if it is not essential to reduce the attack surface. 3. Monitor plugin vendor announcements and security advisories closely for patches or updates addressing CVE-2025-66106 and apply them promptly once available. 4. Implement web application firewalls (WAF) with rules to detect and block suspicious requests targeting the plugin endpoints. 5. Conduct regular audits of access logs to identify any unusual or unauthorized access attempts related to the plugin. 6. Educate site administrators and content managers about the risks of privilege misuse and the importance of maintaining strict access controls. 7. Consider deploying intrusion detection systems (IDS) that can alert on anomalous behavior involving plugin access. 8. If patching is delayed, use plugin-specific configuration options or custom code to enforce additional authorization checks as a temporary workaround.