CVE-2025-63038 identifies a missing authorization vulnerability (CWE-862) in the WP Custom Admin Interface plugin developed by Northern Beaches Websites. This vulnerability arises due to improperly configured access control mechanisms that fail to enforce authorization checks on certain administrative functions within the WordPress plugin. As a result, users with limited privileges (requiring only low privileges and no user interaction) can exploit this flaw to perform unauthorized actions that impact the integrity of the WordPress site. The vulnerability does not affect confidentiality or availability directly but allows unauthorized modification of administrative settings or content, which could lead to defacement, insertion of malicious content, or further exploitation. The affected versions include all versions up to 7.40, with no specific lower bound version identified. The CVSS v3.1 base score is 4.3, reflecting a medium severity level, with an attack vector over the network, low attack complexity, requiring privileges but no user interaction, and unchanged scope. No known exploits have been reported in the wild, and no patches are currently linked, indicating that mitigation relies on vendor updates and configuration hardening. The vulnerability is particularly relevant for organizations using this plugin in WordPress environments, as it could be leveraged by authenticated users with limited rights to escalate privileges or alter administrative configurations without proper authorization.

For European organizations, this vulnerability poses a moderate risk primarily to the integrity of WordPress-based websites that utilize the WP Custom Admin Interface plugin. Unauthorized administrative changes could lead to website defacement, insertion of malicious content, or unauthorized configuration changes that may facilitate further attacks such as privilege escalation or data manipulation. While confidentiality and availability are not directly impacted, the integrity compromise can damage organizational reputation, lead to loss of customer trust, and potentially expose the organization to regulatory scrutiny under GDPR if personal data is indirectly affected. Organizations with public-facing websites or e-commerce platforms relying on WordPress are particularly at risk. The medium severity score suggests that while the threat is not critical, it should not be ignored, especially in environments where multiple users have access to the WordPress admin interface. The lack of known exploits in the wild reduces immediate risk but does not eliminate the potential for future exploitation.

1. Immediately review and audit user roles and permissions within WordPress to ensure that only trusted users have administrative or elevated privileges. 2. Implement the principle of least privilege by restricting access to the WP Custom Admin Interface plugin features only to necessary users. 3. Monitor WordPress logs for unusual administrative actions or changes that could indicate exploitation attempts. 4. Apply vendor patches or updates as soon as they become available to address the missing authorization flaw. 5. Consider deploying Web Application Firewalls (WAFs) with rules to detect and block unauthorized access attempts targeting the plugin’s administrative endpoints. 6. Conduct regular security assessments and penetration testing focused on WordPress plugins and their access controls. 7. Educate administrators and users about the risks of privilege misuse and enforce strong authentication mechanisms to reduce the risk of compromised credentials. 8. If patching is delayed, consider temporarily disabling or restricting access to the WP Custom Admin Interface plugin until a fix is applied.