CVE-2025-62916 is a missing authorization vulnerability identified in the adivaha® Flights & Hotels Booking WordPress plugin, affecting all versions up to 3.1. The flaw arises from incorrectly configured access control mechanisms within the plugin, allowing attackers with limited privileges (PR:L) to perform unauthorized actions without requiring user interaction (UI:N). The vulnerability is remotely exploitable over the network (AV:N) and impacts the confidentiality, integrity, and availability of the affected systems to a high degree (C:H/I:H/A:H). Specifically, an attacker could bypass authorization checks to access or modify sensitive booking data, manipulate reservations, or disrupt service availability. The plugin is commonly used by travel and hospitality websites to manage flight and hotel bookings, making it a critical component for business operations. Although no public exploits have been observed yet, the ease of exploitation combined with the high impact makes this a significant threat. The vulnerability was published on October 27, 2025, and is tracked under CVE-2025-62916 with a CVSS v3.1 score of 8.8. The root cause is an incorrect implementation of access control security levels, which should have restricted certain operations to authorized users only. The lack of proper authorization checks means that attackers with minimal privileges can escalate their capabilities, potentially leading to full system compromise or data leakage.

For European organizations, this vulnerability poses a substantial risk, especially for those operating in the travel, tourism, and hospitality sectors that rely on the adivaha® Flights & Hotels Booking plugin. Exploitation could lead to unauthorized access to customer booking data, including personal and payment information, resulting in data breaches and regulatory non-compliance under GDPR. Integrity of booking records could be compromised, causing financial loss, reputational damage, and operational disruption. Availability impacts could manifest as denial of service or manipulation of booking workflows, affecting customer trust and revenue streams. Given the plugin’s integration with WordPress, a widely used CMS in Europe, the attack surface is significant. Organizations may also face legal and financial penalties due to compromised customer data. The lack of known exploits in the wild currently provides a window for proactive mitigation, but the high CVSS score indicates that attackers could develop exploits rapidly. The vulnerability could be leveraged as a foothold for broader network compromise if exploited in conjunction with other weaknesses.

1. Monitor the vendor’s official channels closely for security patches addressing CVE-2025-62916 and apply them immediately upon release. 2. Until patches are available, restrict access to the plugin’s administrative and booking management interfaces using network-level controls such as IP whitelisting or VPN access. 3. Implement strict WordPress user role management to limit plugin access only to trusted administrators and reduce privilege levels where possible. 4. Conduct thorough audits of existing bookings and user activity logs to detect any unauthorized access or suspicious behavior. 5. Employ Web Application Firewalls (WAFs) with custom rules to detect and block attempts to exploit missing authorization flaws. 6. Regularly back up booking data and WordPress configurations to enable rapid recovery in case of compromise. 7. Educate IT and security teams about the specific risks associated with this plugin and ensure incident response plans include scenarios involving plugin vulnerabilities. 8. Consider alternative booking plugins with stronger security track records if immediate patching is not feasible. 9. Use vulnerability scanning tools to identify instances of the affected plugin across the organization’s web assets. 10. Engage with third-party security experts to perform penetration testing focused on access control weaknesses in WordPress environments.