CVE-2025-49377 is a missing authorization vulnerability identified in the Themefic Hydra Booking plugin, affecting all versions up to and including 1.1.9. This vulnerability arises from incorrectly configured access control security levels within the plugin, which allows unauthenticated remote attackers to bypass authorization mechanisms. The vulnerability does not require any user privileges or interaction, making it remotely exploitable over the network. Exploiting this flaw can lead to unauthorized access to sensitive booking or user data managed by the plugin, impacting confidentiality. The CVSS 3.1 base score is 7.5, reflecting a high severity primarily due to the ease of exploitation (network vector, low attack complexity) and the high confidentiality impact. There is no impact on integrity or availability, and the scope remains unchanged as the vulnerability affects only the vulnerable component. No patches or official fixes are currently linked, and no known exploits have been reported in the wild. The vulnerability was reserved in June 2025 and published in October 2025. Hydra Booking is a WordPress plugin commonly used for managing appointments and bookings, often in hospitality, healthcare, and service industries. The missing authorization flaw could allow attackers to retrieve or manipulate booking information without proper credentials, potentially leading to data breaches or privacy violations.

For European organizations, the primary impact of CVE-2025-49377 is the unauthorized disclosure of sensitive booking and user data, which could include personal identifiable information (PII) and business-critical scheduling details. This exposure can lead to privacy violations under GDPR, resulting in regulatory penalties and reputational damage. Hospitality, healthcare, and service sectors relying on Hydra Booking are particularly vulnerable, as attackers could access customer data or disrupt booking confidentiality. Although the vulnerability does not affect data integrity or availability, the confidentiality breach alone can have significant operational and legal consequences. Additionally, attackers could leverage the exposed data for further targeted attacks such as phishing or social engineering. The lack of authentication requirements and ease of exploitation increase the risk of widespread attacks if the plugin is widely deployed without mitigation. Organizations may also face challenges in incident response due to the stealthy nature of unauthorized access without triggering typical authentication logs.

Immediate mitigation should focus on applying any official patches or updates released by Themefic addressing this vulnerability once available. Until patches are released, organizations should implement strict network-level access controls to limit exposure of the Hydra Booking plugin endpoints to trusted IP addresses only. Web application firewalls (WAFs) can be configured to detect and block suspicious requests targeting access control bypass patterns. Conduct thorough audits of user permissions and plugin configurations to ensure no excessive privileges are granted. Consider temporarily disabling the plugin or replacing it with alternative booking solutions if feasible. Monitor web server and application logs for unusual access patterns or unauthorized data retrieval attempts. Employ data encryption at rest and in transit to minimize data exposure impact. Finally, educate IT and security teams about this vulnerability to ensure rapid response and remediation efforts.