CVE-2026-2848 is a medium severity SQL injection vulnerability affecting SourceCodester Simple Responsive Tourism Website version 1.0. The flaw exists in the registration functionality, specifically in the /classes/Master.php?f=register endpoint, where the Username parameter is improperly sanitized. This allows an unauthenticated remote attacker to inject arbitrary SQL commands, potentially manipulating the backend database. The vulnerability does not require user interaction or privileges, making it easier to exploit remotely. 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 impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no active exploits have been reported in the wild, the availability of exploit code increases the risk of exploitation. The vulnerability can lead to unauthorized data disclosure, data modification, or denial of service on the affected system. No official patches have been linked yet, so mitigation relies on secure coding practices and monitoring. This vulnerability highlights the importance of proper input validation and use of parameterized queries in web applications handling user input.

The impact of CVE-2026-2848 can be significant for organizations using the affected SourceCodester Simple Responsive Tourism Website 1.0. Successful exploitation allows attackers to execute arbitrary SQL queries on the backend database, potentially leading to unauthorized disclosure of sensitive user data, modification or deletion of records, and disruption of service availability. This can result in data breaches, loss of customer trust, regulatory penalties, and operational downtime. Since the vulnerability requires no authentication or user interaction, it can be exploited remotely and at scale, increasing the risk of widespread attacks. Tourism-related businesses relying on this software may face reputational damage and financial losses if attackers leverage this flaw to compromise their systems. Additionally, attackers could use the access gained to pivot to other internal systems, escalating the overall security risk.

To mitigate CVE-2026-2848, organizations should immediately review and update the registration component to ensure proper input validation and sanitization of the Username parameter. Implementing parameterized queries or prepared statements is critical to prevent SQL injection attacks. If patches or updates from the vendor become available, they should be applied promptly. In the absence of official patches, consider deploying web application firewalls (WAFs) with rules targeting SQL injection patterns specific to this vulnerability. Conduct thorough code audits to identify and remediate similar injection points in the application. Additionally, monitor database logs and application behavior for unusual queries or access patterns indicative of exploitation attempts. Restrict database user privileges to the minimum necessary to limit the impact of any successful injection. Finally, educate developers on secure coding practices to prevent future injection vulnerabilities.