CVE-2026-39764: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in RadiusTheme Radius Booking — Booking Calendar for Appointments & Services

This vulnerability (CVE-2026-39764) involves improper neutralization of special elements used in SQL commands (CWE-89) in Radius Booking — Booking Calendar for Appointments & Services. It affects versions up to 1.0.19 and allows unauthenticated attackers to perform SQL Injection attacks. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, scope changed, high confidentiality impact, no integrity impact, and low availability impact.

Successful exploitation can lead to unauthorized disclosure of sensitive data due to high confidentiality impact. The vulnerability does not affect data integrity but can cause partial denial of service. Since the attack requires no authentication and can be performed remotely, the risk is critical.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to the affected application and monitoring for suspicious activity related to SQL injection attempts.