CVE-2025-11497 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the Advanced Database Cleaner plugin for WordPress, affecting all versions up to and including 3.1.6. The root cause is improper input validation (CWE-20) due to missing or incorrect nonce verification in the aDBc_prepare_elements_to_clean() function. Nonces in WordPress are security tokens used to verify that requests originate from legitimate users and prevent CSRF attacks. Without proper nonce validation, attackers can craft malicious requests that, when executed by an authenticated administrator (e.g., via clicking a link), alter plugin settings such as the 'keep last' option, which controls how many database entries are retained. This can lead to unintended configuration changes, potentially impacting database cleanup behavior. The vulnerability does not expose sensitive data or allow remote code execution but compromises the integrity of plugin settings. The CVSS v3.1 base score is 4.3 (medium), reflecting network attack vector, low complexity, no privileges required, but requiring user interaction. No patches or exploits are currently publicly available, but the vulnerability is published and should be addressed promptly. The plugin is widely used in WordPress environments, making this a relevant threat for many websites relying on it for database maintenance.

The primary impact of CVE-2025-11497 is on the integrity of the Advanced Database Cleaner plugin's configuration. An attacker exploiting this vulnerability can manipulate the 'keep last' setting, potentially causing the plugin to retain fewer or more database entries than intended. This may lead to premature deletion of important data or retention of unnecessary data, which could degrade database performance or cause data management issues. While this does not directly compromise confidentiality or availability, improper database cleanup could indirectly affect site stability or data reliability. Since exploitation requires tricking an administrator into performing an action, the risk is mitigated by user awareness but remains significant for sites with multiple administrators or less security-conscious users. Organizations relying on this plugin for database maintenance should consider the risk of unauthorized configuration changes that could disrupt normal operations or complicate incident response.

To mitigate CVE-2025-11497, organizations should: 1) Immediately update the Advanced Database Cleaner plugin to a version where nonce validation is correctly implemented once available. 2) Until a patch is released, restrict administrative access to trusted users only and educate administrators about the risks of clicking untrusted links or visiting suspicious websites. 3) Implement Web Application Firewall (WAF) rules to detect and block suspicious POST requests targeting the aDBc_prepare_elements_to_clean() function or related plugin endpoints. 4) Employ Content Security Policy (CSP) headers and SameSite cookie attributes to reduce CSRF attack surface. 5) Regularly audit plugin settings and database cleanup logs to detect unauthorized changes early. 6) Consider temporarily disabling or replacing the plugin if immediate patching is not feasible, especially on high-value or high-risk sites. 7) Monitor security advisories from the plugin vendor and WordPress security communities for updates and patches.