CVE-2025-66063 identifies a missing authorization vulnerability in the WP Google Review Slider plugin developed by jgwhite33, affecting all versions up to and including 17.4. The vulnerability arises from improperly configured access control mechanisms, allowing unauthorized users to bypass security checks that should restrict access to certain plugin functionalities or data. This type of vulnerability typically results from failure to verify user permissions before executing sensitive operations or exposing sensitive information. In the context of WordPress, such a flaw can be exploited by unauthenticated or low-privilege users to manipulate plugin settings, inject malicious content, or extract sensitive review data. Although no public exploits have been reported yet, the vulnerability is significant because the WP Google Review Slider plugin is widely used to display Google reviews on websites, often in commercial or reputation-sensitive contexts. The lack of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed; however, the nature of missing authorization generally implies a high risk. The vulnerability was published on November 21, 2025, by Patchstack, with no current patches or mitigations officially released. Organizations using this plugin should consider the risk of unauthorized data access or modification, which could lead to reputational damage or data integrity issues.

For European organizations, the impact of CVE-2025-66063 can be significant, especially for businesses relying on WordPress websites to showcase customer reviews and maintain online reputation. Unauthorized access could allow attackers to alter displayed reviews, inject misleading information, or extract sensitive customer feedback data, undermining trust and potentially violating data protection regulations such as GDPR. E-commerce platforms, marketing agencies, and service providers using the plugin are particularly at risk. The vulnerability could also be leveraged as a foothold for further attacks on the website, including privilege escalation or malware deployment. Given the widespread use of WordPress in Europe and the importance of online reputation management, the threat could affect a broad range of sectors including retail, hospitality, and professional services. The absence of known exploits reduces immediate risk but does not eliminate the potential for targeted attacks once exploit code becomes available.

Until an official patch is released, European organizations should implement several specific mitigations: 1) Restrict access to the WP Google Review Slider plugin’s administrative interfaces using web application firewalls (WAF) or IP whitelisting to limit exposure to trusted users only. 2) Conduct thorough audits of user roles and permissions within WordPress to ensure that only necessary users have plugin management capabilities. 3) Monitor web server and application logs for unusual access patterns or unauthorized attempts to interact with the plugin. 4) Temporarily disable or remove the plugin if it is not critical to business operations to eliminate the attack surface. 5) Stay informed via vendor and security advisories for the release of patches or updates addressing this vulnerability. 6) Employ security plugins that can detect and block unauthorized access attempts or suspicious behavior related to plugin exploitation. 7) Educate site administrators about the risks of missing authorization vulnerabilities and the importance of timely updates.