CVE-2025-62916 identifies a missing authorization vulnerability in the adivaha® Flights & Hotels Booking WordPress plugin, affecting versions up to 3.1. This vulnerability arises from improperly configured access control mechanisms within the plugin, allowing attackers to bypass authorization checks. As a result, unauthorized users could perform actions typically restricted to authenticated or privileged users, such as modifying booking details, accessing sensitive customer information, or manipulating reservation workflows. The vulnerability stems from the plugin's failure to enforce correct security levels on certain operations, which is a common issue in web applications where access control is not rigorously implemented. Although no public exploits have been reported yet, the nature of the vulnerability suggests that exploitation could be straightforward, especially if the plugin is exposed on publicly accessible WordPress sites. The plugin is used primarily by travel agencies and service providers to manage flight and hotel bookings, making the confidentiality and integrity of booking data critical. The lack of a CVSS score means the severity must be inferred from the potential impact on confidentiality, integrity, and availability, the ease of exploitation (no authentication bypass required), and the scope of affected systems (any WordPress site using the vulnerable plugin). This vulnerability highlights the importance of secure plugin development and proper access control enforcement in WordPress environments.

For European organizations, especially those in the travel and hospitality sectors using the adivaha® Flights & Hotels Booking plugin, this vulnerability poses a significant risk. Unauthorized access could lead to manipulation of booking data, resulting in financial losses, reputational damage, and potential regulatory penalties under GDPR due to exposure or alteration of personal customer data. The integrity of booking systems could be compromised, leading to incorrect reservations or cancellations that disrupt business operations. Confidentiality breaches could expose sensitive customer information such as travel itineraries, payment details, and personal identifiers. Additionally, attackers might leverage this vulnerability as a foothold for further attacks within the affected organization's network. The impact is heightened in Europe due to strict data protection regulations and the critical role of tourism in many European economies. Organizations failing to address this vulnerability risk operational disruption and loss of customer trust.

European organizations should immediately audit their WordPress installations to identify the use of the adivaha® Flights & Hotels Booking plugin, particularly versions up to 3.1. Until a patch is released, restrict access to the plugin’s administrative interfaces using web application firewalls (WAFs), IP whitelisting, or VPNs to limit exposure. Implement strict role-based access controls within WordPress to minimize the number of users with plugin management privileges. Monitor logs for unusual activities related to booking modifications or unauthorized access attempts. Regularly back up booking data to enable recovery in case of compromise. Engage with the plugin vendor or community to obtain updates or patches as soon as they become available. Consider deploying intrusion detection systems (IDS) to detect exploitation attempts. Educate staff on the risks associated with plugin vulnerabilities and ensure timely application of security updates. Finally, conduct penetration testing focused on access control mechanisms to identify similar weaknesses.