CVE-2025-39561 identifies a missing authorization vulnerability classified under CWE-862 in the LoginWP - Pro plugin developed by Marketing Fire, LLC. This vulnerability affects versions up to 4.0.8.5 and allows unauthorized users to access functionality that should be restricted by Access Control Lists (ACLs). Specifically, the plugin fails to properly enforce authorization checks on certain functions, enabling attackers to perform actions without the necessary permissions. The vulnerability is remotely exploitable without requiring authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact primarily affects the integrity and availability of the affected system, as unauthorized access could lead to manipulation or disruption of plugin operations. Although no public exploits have been reported, the flaw represents a significant risk in environments where LoginWP - Pro is deployed, especially in WordPress installations that rely on this plugin for login management or user session control. The absence of a patch at the time of reporting necessitates vigilance and interim protective measures. The vulnerability was reserved in April 2025 and published in January 2026, reflecting a recent disclosure timeline.

For European organizations, the missing authorization vulnerability in LoginWP - Pro could lead to unauthorized modification or disruption of login-related functionalities, potentially compromising user session management and access controls. This can result in degraded service availability or unauthorized changes that undermine system integrity. Organizations relying on this plugin for critical authentication workflows may face increased risk of operational disruption or targeted attacks exploiting this flaw. The remote and unauthenticated nature of the exploit increases the attack surface, making it easier for threat actors to leverage this vulnerability without prior access. This is particularly concerning for sectors with stringent compliance requirements such as finance, healthcare, and government institutions in Europe. Additionally, the potential for cascading effects on other integrated systems or plugins could amplify the impact. The lack of known exploits currently provides a window for proactive mitigation, but the medium severity rating underscores the need for timely response.

1. Monitor official channels from Marketing Fire, LLC for patches or updates addressing CVE-2025-39561 and apply them promptly once available. 2. Until a patch is released, restrict access to the WordPress administrative dashboard and plugin management interfaces using network-level controls such as IP whitelisting or VPN access. 3. Implement strict role-based access controls within WordPress to limit user permissions, ensuring only trusted administrators can interact with LoginWP - Pro functionalities. 4. Conduct regular audits of plugin usage and access logs to detect any unauthorized attempts to exploit the vulnerability. 5. Consider deploying Web Application Firewalls (WAFs) with custom rules to block suspicious requests targeting LoginWP - Pro endpoints. 6. Educate IT and security teams about the vulnerability to increase awareness and readiness for incident response. 7. Evaluate alternative plugins or solutions if immediate patching is not feasible, to reduce exposure. 8. Maintain up-to-date backups to enable recovery in case of exploitation leading to data or service disruption.