CVE-2025-69032 is an authorization bypass vulnerability identified in the Mikado-Themes FiveStar WordPress plugin, affecting versions up to and including 1.7. The root cause is an incorrectly configured access control mechanism that allows an attacker to exploit a user-controlled key parameter to bypass security checks. This means that an attacker with low privileges (PR:L) can remotely (AV:N) access or manipulate resources or functionalities that should be restricted, without requiring any user interaction (UI:N). The vulnerability impacts the confidentiality and integrity of the affected system by potentially exposing or altering sensitive data or settings. However, it does not affect system availability. The CVSS v3.1 base score is 5.4, reflecting a medium severity level. No known exploits have been reported in the wild, and no official patches have been released as of the publication date. The vulnerability is particularly relevant for websites using the FiveStar theme, which is popular among WordPress users for building business and portfolio sites. The exploitation vector involves manipulating a key parameter that controls access rights, indicating a flaw in how the plugin enforces authorization policies. This vulnerability underscores the importance of rigorous access control validation in web applications and plugins.

For European organizations, this vulnerability could lead to unauthorized access to sensitive information or unauthorized modification of website content or settings, potentially damaging brand reputation and customer trust. Organizations operating e-commerce, media, or corporate websites using the FiveStar theme are at particular risk. Confidentiality breaches could expose customer data or internal business information. Integrity impacts could allow attackers to alter website content, potentially facilitating phishing or misinformation campaigns. While availability is not directly impacted, the indirect consequences of data exposure or content manipulation could lead to operational disruptions or regulatory scrutiny under GDPR. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once the vulnerability becomes widely known.

European organizations should immediately audit their WordPress installations to identify the use of the Mikado-Themes FiveStar plugin, especially versions up to 1.7. Until an official patch is released, administrators should restrict access to the WordPress admin area and sensitive plugin functionalities to trusted IP addresses or VPNs. Implementing Web Application Firewalls (WAF) with custom rules to detect and block suspicious requests manipulating authorization keys can provide interim protection. Regularly monitor logs for unusual access patterns or privilege escalations related to the plugin. Engage with the vendor or community to track patch releases and apply updates promptly once available. Additionally, conduct a thorough review of access control configurations within the plugin and consider disabling or replacing the plugin if it is not essential. Employing principle of least privilege for user roles within WordPress can limit the potential impact of exploitation.