CVE-2024-54416 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the Navdeep Wp Login with Ajax WordPress plugin, specifically affecting versions up to and including 0.6. The vulnerability arises because the plugin fails to properly verify the origin of requests that perform sensitive actions, allowing attackers to trick authenticated users into submitting malicious requests unknowingly. This CSRF flaw can be leveraged to inject Stored Cross-Site Scripting (XSS) payloads into the application, which persist and execute in the context of other users' browsers. Stored XSS can lead to session hijacking, credential theft, or further compromise of the affected website. The plugin’s AJAX-based login mechanism is the attack vector, where insufficient request validation enables the CSRF attack. Although no CVSS score has been assigned, the vulnerability is significant due to the combination of CSRF and Stored XSS, which can be chained for impactful attacks. No patches or official fixes have been linked yet, and no known exploits are currently in the wild, but the risk to WordPress sites using this plugin is considerable. The vulnerability was published on December 16, 2024, with the initial reservation on December 2, 2024, by Patchstack. The lack of authentication bypass or privilege escalation details suggests the attack requires an authenticated user session, but user interaction is minimal, limited to visiting a malicious page.

The impact of CVE-2024-54416 is potentially severe for organizations running WordPress sites with the vulnerable Wp Login with Ajax plugin. Successful exploitation can lead to unauthorized actions performed in the context of authenticated users, including administrators, which may result in persistent Stored XSS attacks. This can compromise user sessions, steal sensitive information, inject malicious scripts, and facilitate further attacks such as malware distribution or site defacement. The vulnerability undermines the integrity and confidentiality of the affected websites and can also affect availability if attackers disrupt login processes or site functionality. Given WordPress’s widespread use globally, many organizations, especially those relying on this plugin for enhanced login features, are at risk. The absence of known exploits currently reduces immediate threat but does not diminish the urgency for mitigation due to the ease of exploitation via CSRF and the persistence of Stored XSS.

To mitigate CVE-2024-54416, organizations should immediately audit their WordPress installations for the presence of the Navdeep Wp Login with Ajax plugin and its version. If the plugin is in use, disable it temporarily until a patch or update is available. Implementing Web Application Firewall (WAF) rules to detect and block CSRF attack patterns targeting the login AJAX endpoints can provide interim protection. Site administrators should enforce strict Content Security Policy (CSP) headers to reduce the impact of potential XSS payloads. Additionally, enabling multi-factor authentication (MFA) can limit the damage from session hijacking. Developers maintaining the plugin should add anti-CSRF tokens (nonce verification) to all state-changing AJAX requests and sanitize all user inputs to prevent stored XSS. Monitoring logs for unusual login or AJAX request patterns can help detect exploitation attempts. Finally, educating users to avoid clicking suspicious links while authenticated can reduce risk exposure.