CVE-2025-62916 identifies a Missing Authorization vulnerability in the adivaha® Flights & Hotels Booking WordPress plugin, affecting all versions up to 3.1. This flaw arises from incorrectly configured access control mechanisms, allowing users 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 (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 the vulnerability particularly critical for organizations relying on it for customer-facing operations. Although no known exploits have been reported in the wild, the high CVSS score (8.8) indicates a significant risk if weaponized. The vulnerability was reserved and published in late October 2025, with no patches currently linked, emphasizing the need for urgent vendor response and user vigilance. The issue underscores the importance of robust access control implementations in WordPress plugins, especially those handling sensitive transactional data.

For European organizations, especially those in the travel, tourism, and hospitality sectors, this vulnerability poses a substantial risk. Exploitation could lead to unauthorized access to customer booking information, including personal and payment data, resulting in data breaches and regulatory non-compliance under GDPR. Integrity violations could allow attackers to alter bookings or pricing, causing financial losses and reputational damage. Availability impacts might disrupt booking services, leading to operational downtime and customer dissatisfaction. Given the widespread use of WordPress in Europe and the reliance on third-party plugins for booking management, organizations using this plugin are vulnerable to targeted attacks. The lack of authentication barriers for exploitation increases the attack surface, potentially enabling remote attackers to compromise systems without user interaction. This could also facilitate lateral movement within networks if attackers gain footholds via this vulnerability. The threat is amplified in countries with large tourism industries and high WordPress adoption, where attackers may seek to exploit these weaknesses for financial gain or espionage.

1. Immediately monitor vendor communications for official patches or updates addressing CVE-2025-62916 and apply them promptly upon release. 2. Until patches are available, restrict access to the plugin’s administrative and API endpoints using network-level controls such as IP whitelisting or web application firewalls (WAFs) to limit exposure. 3. Conduct thorough access control audits on the plugin configuration to ensure that only authorized users have necessary privileges, minimizing the risk of privilege escalation. 4. Implement enhanced logging and monitoring around booking-related activities to detect anomalous or unauthorized actions indicative of exploitation attempts. 5. Consider temporarily disabling the plugin or replacing it with alternative solutions if patching is delayed and risk is unacceptable. 6. Educate site administrators on the risks of using outdated or unpatched plugins and enforce strict update policies. 7. Employ segmentation and least privilege principles within hosting environments to contain potential breaches. 8. Review and strengthen overall WordPress security posture, including regular backups, to facilitate recovery if compromise occurs.