CVE-2026-25415 identifies a Missing Authorization vulnerability in the WPBookit Pro WordPress plugin developed by iqonicdesign, affecting all versions up to 1.6.18. The core issue stems from improperly configured access control security levels, which means that certain functions or data within the plugin can be accessed without proper authorization checks. This type of vulnerability typically allows an attacker to bypass intended permission restrictions, potentially enabling unauthorized actions such as modifying bookings, accessing sensitive customer data, or altering plugin settings. Although no public exploits have been reported, the vulnerability is significant because WordPress plugins are often targeted due to their widespread use and integration with business-critical websites. WPBookit Pro is used for booking and appointment management, so unauthorized access could disrupt business operations or lead to data leakage. The vulnerability was reserved and published in early 2026, but no CVSS score has been assigned yet, indicating that further analysis or patches may be pending. The lack of authentication requirements for exploitation increases the risk, as attackers do not need valid credentials to exploit the flaw. The vulnerability affects the confidentiality and integrity of data managed by the plugin and could impact availability if attackers manipulate booking functions. Given the plugin's role and the nature of the vulnerability, the threat is substantial for organizations relying on WPBookit Pro for customer-facing services.

For European organizations, the impact of CVE-2026-25415 can be significant, especially for businesses that rely on WPBookit Pro for managing customer appointments and bookings. Unauthorized access could lead to exposure of sensitive customer information, including personal details and booking histories, violating data protection regulations such as GDPR. Integrity of booking data could be compromised, resulting in fraudulent or manipulated appointments, which can disrupt business operations and damage customer trust. Additionally, attackers might leverage the vulnerability to escalate privileges or pivot to other parts of the website or network, increasing the risk of broader compromise. The disruption of booking services can also affect revenue streams and customer satisfaction. Since WordPress is widely used across Europe, and WPBookit Pro targets e-commerce and service sectors, the vulnerability poses a risk to SMEs and larger enterprises alike. The absence of known exploits provides a window for proactive mitigation, but the potential for automated attacks exists once exploit code becomes available.

To mitigate CVE-2026-25415, organizations should first verify if they are using WPBookit Pro versions up to 1.6.18 and plan to update to a patched version as soon as it is released by iqonicdesign. In the interim, restrict access to the WordPress admin dashboard and plugin management interfaces to trusted personnel only, using strong authentication methods such as multi-factor authentication (MFA). Implement web application firewalls (WAFs) with rules to detect and block suspicious requests targeting WPBookit Pro endpoints. Conduct regular audits of user roles and permissions to ensure least privilege principles are enforced. Monitor logs for unusual activity related to booking modifications or unauthorized access attempts. If patching is delayed, consider disabling the plugin temporarily or limiting its functionality to reduce exposure. Additionally, maintain regular backups of website data to enable recovery in case of compromise. Engage with the vendor and security communities to stay informed about updates and exploit developments. Finally, educate staff about the risks associated with plugin vulnerabilities and the importance of timely patching.