CVE-2026-3705 identifies a SQL injection vulnerability in the Simple Flight Ticket Booking System version 1.0 developed by code-projects. The vulnerability is located in the /Adminsearch.php script, where the 'flightno' parameter is improperly sanitized or validated, enabling attackers to inject arbitrary SQL commands. This injection flaw allows remote, unauthenticated attackers to manipulate backend database queries, potentially extracting sensitive information, modifying records, or deleting data. The attack vector requires no user interaction and no privileges, making exploitation straightforward. The vulnerability affects the confidentiality, integrity, and availability of the booking system's data. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no official patches have been released, public exploit code is available, increasing the likelihood of exploitation. The vulnerability's presence in a flight booking system raises concerns about exposure of passenger data and disruption of flight operations.

The impact of CVE-2026-3705 is significant for organizations using the affected Simple Flight Ticket Booking System. Successful exploitation can lead to unauthorized disclosure of sensitive passenger and flight data, undermining confidentiality. Attackers could also alter or delete booking information, compromising data integrity and potentially causing operational disruptions or denial of service. This could result in financial losses, reputational damage, regulatory penalties, and erosion of customer trust. Given the system's role in managing flight bookings, disruption could affect airline operations and passenger experience. The availability impact, while partial, could still lead to service interruptions. The public availability of exploit code increases the risk of automated attacks and widespread exploitation, especially in environments lacking proper network segmentation or input validation controls.

To mitigate CVE-2026-3705, organizations should immediately implement input validation and parameterized queries or prepared statements in the /Adminsearch.php file to prevent SQL injection. Since no official patch is currently available, manual code review and remediation are critical. Employ web application firewalls (WAFs) with SQL injection detection and blocking capabilities as an interim protective measure. Restrict network access to the administration interface to trusted IP addresses and enforce strong authentication mechanisms to reduce exposure. Regularly monitor logs for suspicious database query patterns or repeated access attempts to the vulnerable parameter. Conduct thorough security testing, including dynamic application security testing (DAST) and static code analysis, to identify and remediate similar vulnerabilities. Finally, plan for an upgrade or replacement of the affected software with a secure, maintained alternative to eliminate long-term risk.