CVE-2026-3806 identifies a SQL injection vulnerability in the SourceCodester/janobe Resort Reservation System version 1.0, specifically within the /room_rates.php script. The vulnerability arises from improper sanitization of the 'q' parameter, which is used in SQL queries without adequate validation or parameterization. This allows an attacker to craft malicious input that alters the intended SQL command, potentially enabling unauthorized access to or manipulation of the backend database. The vulnerability can be exploited remotely without requiring authentication or user interaction, increasing its accessibility to attackers. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and low impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although the impact is limited, attackers could leverage this flaw to extract sensitive reservation data, modify booking information, or disrupt service availability. No official patches have been linked yet, and while no active exploits are reported in the wild, public proof-of-concept code exists, raising the likelihood of exploitation attempts. The vulnerability is confined to version 1.0 of the product, which is a niche application used primarily in resort and hospitality management contexts.

The SQL injection vulnerability could allow attackers to access or manipulate sensitive reservation system data, including customer information, booking details, and pricing. This can lead to data breaches compromising confidentiality, unauthorized modification of reservation records impacting data integrity, and potential service disruptions affecting availability. Attackers might also escalate their access within the system or pivot to other internal resources if the database contains broader network credentials or sensitive operational data. For organizations relying on this system, such compromises could result in financial loss, reputational damage, regulatory penalties, and operational downtime. The medium severity reflects limited but meaningful impacts, especially for businesses in the hospitality sector where customer trust and data protection are critical. Since exploitation requires no authentication and can be performed remotely, the attack surface is broad, increasing risk exposure for unpatched systems.

Organizations should immediately audit their deployment of SourceCodester/janobe Resort Reservation System version 1.0 and restrict external access to the /room_rates.php endpoint if possible. Implement input validation and sanitization on the 'q' parameter to reject or properly escape malicious SQL syntax. Refactor the application code to use parameterized queries or prepared statements to prevent injection attacks. Monitor database logs and web application logs for unusual query patterns or repeated failed attempts targeting the 'q' parameter. Employ web application firewalls (WAFs) with rules designed to detect and block SQL injection payloads targeting this endpoint. If available, apply vendor patches or updates addressing this vulnerability promptly. Additionally, conduct regular security assessments and penetration testing focused on injection flaws. Educate developers on secure coding practices to prevent similar vulnerabilities in future releases. Backup critical data regularly to enable recovery in case of data corruption or loss.