CVE-2025-1778 is a medium-severity vulnerability affecting the SeaTheme Art Theme for WordPress, present in all versions up to and including 3.12.2.3. The root cause is a missing authorization check (CWE-862) in the AJAX function 'arttheme_theme_option_restore'. This function is intended to restore theme options but lacks proper capability verification, allowing any authenticated user with subscriber-level access or higher to invoke it. As a result, such users can delete theme options without proper permission. The vulnerability does not require user interaction beyond authentication and can be exploited remotely over the network (AV:N). The CVSS 3.1 base score is 4.3, reflecting a low complexity attack (AC:L) with privileges required (PR:L) but no impact on confidentiality or availability, only integrity (I:L). Although no known exploits are currently reported in the wild, the vulnerability could be leveraged by malicious insiders or compromised low-privilege accounts to disrupt site appearance or functionality by deleting theme settings. Since WordPress is widely used across Europe, and the Art Theme is a commercial or popular theme, this vulnerability poses a risk to websites relying on this theme for their visual presentation and configuration. The lack of a patch link suggests that a fix might not yet be available or publicly disclosed, increasing the urgency for administrators to apply mitigations or monitor for updates.

For European organizations, especially those relying on WordPress sites using the SeaTheme Art Theme, this vulnerability could lead to unauthorized modification of website appearance and settings, potentially disrupting business operations, damaging brand reputation, or causing user trust issues. While it does not directly expose sensitive data or cause denial of service, the ability for low-privilege users to alter theme options could be exploited in multi-user environments such as corporate intranets, educational institutions, or e-commerce platforms. This could facilitate further attacks by undermining site integrity or enabling social engineering through altered site content. Organizations in sectors with strict regulatory requirements for website integrity (e.g., finance, healthcare, government) may face compliance risks if unauthorized changes go undetected. Additionally, the ease of exploitation by authenticated users means that compromised subscriber accounts or insider threats could leverage this vulnerability without needing elevated privileges.

Administrators should immediately review user roles and permissions to ensure that subscriber-level accounts are tightly controlled and monitored. Restricting the number of users with subscriber or higher access can reduce the attack surface. Until an official patch is released, consider implementing Web Application Firewall (WAF) rules to detect and block unauthorized AJAX requests to 'arttheme_theme_option_restore'. Monitoring WordPress logs for unusual activity related to theme option changes is advisable. If feasible, temporarily disable or restrict the affected AJAX endpoint via custom code or plugin modifications to enforce capability checks manually. Regular backups of theme options and site configurations should be maintained to enable quick restoration in case of unauthorized deletions. Stay alert for updates from SeaTheme or WordPress security advisories to apply patches promptly once available.