CVE-2025-66106 identifies a missing authorization vulnerability in the Essential Plugin Featured Post Creative, specifically affecting versions up to and including 1.5.5. The vulnerability arises due to incorrectly configured access control mechanisms within the plugin, allowing users with limited privileges (PR:L) to perform actions or access features without proper authorization. The attack vector is network-based (AV:N), requiring no user interaction (UI:N), and the scope remains unchanged (S:U). The CVSS score of 4.3 reflects a medium severity primarily due to limited confidentiality impact (C:L), with no integrity (I:N) or availability (A:N) impact. The flaw could allow an attacker to view or manipulate featured post content or settings that should be restricted, potentially leading to unauthorized information disclosure or content misrepresentation. Although no public exploits have been reported, the vulnerability's presence in a widely used WordPress plugin component makes it a concern for website administrators. The lack of a patch link suggests that a fix may not yet be publicly available, emphasizing the need for interim mitigations. The vulnerability was published on November 21, 2025, and assigned by Patchstack. Given the nature of WordPress plugins and their widespread use, this vulnerability could affect numerous websites globally, especially those relying on the Essential Plugin Featured Post Creative for content presentation.

For European organizations, the impact of CVE-2025-66106 is primarily related to unauthorized access to plugin features that could lead to limited confidentiality breaches, such as exposure of featured post content or unauthorized modification of displayed posts. While the vulnerability does not affect integrity or availability, unauthorized content manipulation could damage organizational reputation or mislead users. Organizations using WordPress sites with this plugin may face increased risk of targeted attacks exploiting this flaw to gain footholds or escalate privileges. The medium severity rating suggests that while the threat is not critical, it is significant enough to warrant prompt attention, especially for entities with public-facing websites or those handling sensitive information. The absence of known exploits in the wild reduces immediate risk but does not eliminate the potential for future exploitation. European organizations should consider this vulnerability in their risk assessments, particularly those in sectors reliant on web presence such as media, e-commerce, and public services.

1. Immediately review and restrict access permissions to the Essential Plugin Featured Post Creative, ensuring only trusted and necessary user roles have access to its features. 2. Monitor web server and application logs for unusual access patterns or attempts to exploit plugin functionalities. 3. Disable or remove the plugin if it is not essential to reduce the attack surface until a patch is available. 4. Stay informed through vendor and security advisories for the release of official patches or updates addressing this vulnerability. 5. Implement web application firewalls (WAF) with custom rules to detect and block suspicious requests targeting the plugin endpoints. 6. Conduct regular security audits and penetration testing focusing on WordPress plugins and access control configurations. 7. Educate administrators and content managers about the risks of privilege misuse and the importance of adhering to the principle of least privilege. 8. Consider isolating critical web applications or using containerization to limit the impact of potential exploitation.