The CVE-2025-14383 vulnerability is a time-based blind SQL Injection flaw found in the wpdevelop Booking Calendar plugin for WordPress, affecting all versions up to and including 10.14.8. The vulnerability stems from improper neutralization of special elements in SQL commands (CWE-89), specifically due to insufficient escaping of the 'dates_to_check' parameter supplied by users. This parameter is directly incorporated into SQL queries without adequate sanitization or the use of prepared statements, allowing attackers to append malicious SQL code. Because the injection is time-based blind, attackers can infer data by measuring response delays, enabling extraction of sensitive information such as user credentials, booking details, or other database contents. The vulnerability requires no authentication or user interaction and can be exploited remotely over the network, increasing its risk profile. The CVSS v3.1 score of 7.5 reflects high severity, primarily due to the impact on confidentiality and the ease of exploitation. Although no public exploits are currently known, the widespread use of WordPress and the Booking Calendar plugin increases the potential attack surface. The lack of a patch link indicates that a fix may not yet be available, emphasizing the need for immediate mitigation steps. The vulnerability could be leveraged by attackers to conduct data theft, reconnaissance, or further attacks against the affected systems.

For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive data stored in WordPress databases, including customer information, booking records, and potentially payment details if stored improperly. Exploitation could lead to data breaches, regulatory non-compliance (e.g., GDPR violations), reputational damage, and financial losses. Organizations relying on the Booking Calendar plugin for service scheduling or e-commerce may face operational disruptions if attackers leverage the vulnerability for further exploitation or data exfiltration. The fact that no authentication is required means that external attackers can target public-facing websites without prior access, increasing the likelihood of attacks. Given the high adoption of WordPress across Europe, especially in small and medium enterprises, the threat surface is considerable. Additionally, sectors such as hospitality, healthcare, and professional services that use booking systems are particularly vulnerable. The absence of known exploits in the wild currently provides a window for proactive defense, but the situation could rapidly evolve.

European organizations should immediately assess their WordPress installations for the presence of the wpdevelop Booking Calendar plugin and verify the version in use. Until an official patch is released, organizations should consider the following specific mitigations: 1) Disable or remove the Booking Calendar plugin if it is not critical to operations. 2) Implement strict input validation and sanitization at the web application level to block malicious payloads targeting the 'dates_to_check' parameter. 3) Deploy or update Web Application Firewalls (WAFs) with custom rules to detect and block SQL Injection attempts targeting this parameter. 4) Monitor web server and database logs for unusual query patterns or time delays indicative of blind SQL Injection attempts. 5) Restrict database user permissions to the minimum necessary to limit the impact of any successful injection. 6) Consider isolating WordPress instances in segmented network zones to reduce lateral movement risk. 7) Stay informed about vendor updates and apply patches promptly once available. 8) Conduct security awareness training for administrators to recognize signs of exploitation. These targeted actions go beyond generic advice and address the specific characteristics of this vulnerability.