CVE-2025-69331 is a vulnerability identified in the Theater for WordPress plugin developed by Jeroen Schmit, affecting all versions up to and including 0.19. The core issue is a missing authorization control, meaning that certain actions within the plugin that should be restricted to privileged users are accessible to users with lower privileges. This incorrect access control can allow an attacker with low-level privileges (PR:L) to perform unauthorized modifications, impacting the integrity of the system. The vulnerability does not affect confidentiality or availability, as it does not expose sensitive data or disrupt service. Exploitation requires network access (AV:N) but no user interaction (UI:N), and the scope remains unchanged (S:U). The CVSS v3.1 base score is 4.3, reflecting a medium severity level. No known exploits have been reported in the wild, and no official patches or updates have been released at the time of publication. The vulnerability likely arises from insufficient checks on user roles or capabilities within the plugin’s code, allowing privilege escalation within the plugin’s functional scope. Since Theater for WordPress is a niche plugin used for managing theater-related content and events on WordPress sites, the attack surface is limited to websites employing this plugin. However, compromised integrity could lead to unauthorized content changes, misleading event information, or manipulation of ticketing or scheduling features if present.

For European organizations, the primary impact of CVE-2025-69331 lies in the potential unauthorized modification of theater-related content or configurations on WordPress sites using the affected plugin. This could undermine the integrity of event information, schedules, or ticketing data, potentially damaging organizational reputation and causing operational disruptions. While confidentiality and availability are not directly impacted, integrity breaches can lead to misinformation and loss of trust among users and patrons. Cultural institutions, event organizers, and entertainment venues relying on this plugin are at risk of such integrity violations. Additionally, unauthorized changes could be leveraged as a foothold for further attacks if combined with other vulnerabilities. The absence of known exploits reduces immediate risk, but the lack of patches means the vulnerability remains exploitable. European organizations with public-facing WordPress sites that use this plugin should consider the risk of unauthorized content tampering, which could have reputational and operational consequences.

1. Restrict plugin access strictly to trusted administrators and limit the number of users with editing privileges for the Theater for WordPress plugin. 2. Conduct a thorough review of user roles and permissions within WordPress to ensure that low-privilege users cannot access or modify theater-related settings or content. 3. Monitor logs and audit trails for unusual activity related to the plugin, such as unexpected changes to event information or configurations. 4. Implement web application firewalls (WAF) with custom rules to detect and block suspicious requests targeting the plugin’s endpoints. 5. Stay informed about updates from the plugin developer or security advisories and apply patches immediately once available. 6. Consider temporarily disabling or replacing the plugin with alternative solutions if critical until a fix is released. 7. Educate site administrators about the risks of privilege escalation and the importance of maintaining strict access controls. 8. Regularly back up WordPress site data and configurations to enable quick restoration in case of unauthorized modifications.