CVE-2026-3705 identifies a SQL injection vulnerability in the Simple Flight Ticket Booking System version 1.0 developed by code-projects. The flaw exists in the /Adminsearch.php file, where the flightno parameter is improperly sanitized, allowing an attacker to inject malicious SQL code. This injection can be performed remotely without requiring authentication or user interaction, making exploitation relatively straightforward. The vulnerability can lead to unauthorized access, modification, or deletion of database records, potentially exposing sensitive flight booking information or administrative data. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges or user interaction required (PR:N/UI:N), and low impact on confidentiality, integrity, and availability (VC:L/VI:L/VA:L). Although the impact is rated low on each security property, the overall score is medium due to ease of exploitation and scope. The exploit has been publicly disclosed, increasing the likelihood of attacks. No official patches or fixes have been released, and the vulnerability affects only version 1.0 of the product. The lack of segmentation or access controls on the affected endpoint could exacerbate the risk. This vulnerability highlights the importance of secure coding practices, especially input validation and parameterized queries in web applications handling sensitive data.

The SQL injection vulnerability in the Simple Flight Ticket Booking System can have significant consequences for organizations operating this software. Attackers exploiting this flaw can gain unauthorized access to the backend database, potentially extracting sensitive customer data such as personal details, flight itineraries, and payment information. They could also alter or delete booking records, disrupting operations and causing financial and reputational damage. Given the system’s role in flight ticket booking, such disruptions could affect customer trust and airline scheduling. The remote and unauthenticated nature of the exploit increases the attack surface, allowing widespread scanning and exploitation attempts. Although no active exploitation has been reported, the public availability of exploit code raises the risk of opportunistic attacks, especially from automated bots. Organizations lacking proper network segmentation or monitoring may face data breaches or service interruptions. The medium severity rating reflects the balance between the ease of exploitation and the limited but meaningful impact on confidentiality, integrity, and availability. Overall, this vulnerability poses a moderate risk that could escalate if combined with other weaknesses or targeted in critical infrastructure environments.

To mitigate CVE-2026-3705, organizations should immediately implement input validation and sanitization for the flightno parameter in /Adminsearch.php, ideally by using parameterized queries or prepared statements to prevent SQL injection. If source code modification is not feasible, deploying a Web Application Firewall (WAF) with rules specifically targeting SQL injection patterns can help block malicious requests. Restricting access to the /Adminsearch.php endpoint through network segmentation or IP whitelisting reduces exposure. Monitoring logs for unusual query patterns or repeated failed attempts can aid in early detection of exploitation attempts. Organizations should also conduct a thorough code review of the entire application to identify and remediate similar injection flaws. Since no official patch is available, consider isolating the affected system from critical networks until a fix is released. Regular backups of the database should be maintained to enable recovery in case of data tampering. Finally, educating development teams on secure coding practices and performing security testing before deployment will help prevent recurrence.