CVE-2025-11815 is an improper authorization vulnerability (CWE-285) found in the UiPress lite WordPress plugin, which provides custom dashboards, admin themes, and pages. The vulnerability stems from the absence of a proper capability check in the uip_save_site_option() function, allowing authenticated users with minimal privileges (Subscriber-level and above) to modify arbitrary plugin settings. This flaw extends to other AJAX actions within the plugin, enabling unauthorized data modification via crafted requests. The vulnerability affects all versions up to and including 3.5.08. Exploitation requires authentication but no user interaction, and it can be performed remotely over the network. The CVSS 3.1 base score is 4.3 (medium severity), reflecting low complexity and no impact on confidentiality or availability but a partial impact on integrity. No patches are currently linked, and no known exploits have been observed in the wild. The vulnerability could be leveraged by attackers to alter plugin behavior, potentially leading to privilege escalation or further attacks within the WordPress environment.

For European organizations, this vulnerability poses a risk primarily to the integrity of WordPress sites using the UiPress lite plugin. Unauthorized modification of plugin settings can lead to misconfigurations, enabling attackers to alter site appearance, functionality, or potentially introduce malicious content. While it does not directly expose sensitive data or cause denial of service, the integrity compromise can facilitate further attacks such as privilege escalation, phishing, or malware distribution. Organizations with large numbers of users assigned Subscriber roles are particularly vulnerable, as attackers only need minimal privileges to exploit the flaw. This can affect corporate websites, intranets, and customer portals, undermining trust and potentially causing reputational damage. The lack of known exploits reduces immediate risk, but the vulnerability should be addressed promptly to prevent future exploitation.

1. Monitor for updates from the plugin vendor and apply patches immediately once available. 2. Until patches are released, restrict Subscriber-level and other low-privilege user roles from accessing or interacting with the plugin’s AJAX endpoints by implementing custom access controls or firewall rules. 3. Use WordPress security plugins or web application firewalls (WAFs) to detect and block suspicious AJAX requests targeting the uip_save_site_option() function or related endpoints. 4. Audit user roles and permissions regularly to ensure minimal necessary privileges are assigned, reducing the attack surface. 5. Implement logging and alerting on changes to plugin settings to detect unauthorized modifications quickly. 6. Consider temporarily disabling the UiPress lite plugin if it is not critical to operations until a secure version is available. 7. Educate site administrators about the risk and encourage vigilance for unusual site behavior or configuration changes.