CVE-2026-11342: SQL Injection in Hotel Tourism Reservation System 1.0

Technical summary

CVE-2026-11342 is a SQL injection flaw (CWE-89) affecting the room parameter handler in /details.php of Hotel and Tourism Reservation System 1.0. The vulnerable endpoint accepts unsanitized user input and incorporates it directly into database queries without proper parameterization or escaping. The attack vector is network-based with low attack complexity, requiring no privileges or user interaction. The CVSS 3.1 score of 7.3 (HIGH) reflects potential confidentiality, integrity, and availability impacts. The weakness also falls under CWE-74 (Improper Neutralization of Special Elements), indicating broader input validation deficiencies.

Business impact

Successful exploitation could expose guest information, reservation details, and potentially payment or identity data stored in the backend database. An attacker could also modify or delete reservations, corrupting business operations and customer records. In the hospitality sector, such breaches carry reputational damage, regulatory compliance violations (GDPR, PCI-DSS for payment data), financial penalties, and loss of customer trust.

Affected systems

Hotel and Tourism Reservation System version 1.0 is confirmed vulnerable. Organizations running this system—particularly small to mid-sized hospitality businesses, travel agencies, and reservation platforms using this software—should assume compromise risk. The vendor and product information was not fully populated in the vulnerability database, so verify your specific deployment against the vendor's advisory to confirm affected installations.

Exploitability

The vulnerability is easily exploitable. No authentication is required, attack complexity is low, and the exploit method has been publicly disclosed. An attacker with basic SQL injection knowledge can craft malicious payloads via the room parameter to execute arbitrary database commands. The public disclosure significantly increases the likelihood of opportunistic attacks against unpatched instances.

Remediation

Apply patches from the vendor as soon as they become available. Until patching is possible, implement input validation and parameterized queries for all database interactions in /details.php. Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the room parameter. Run the application with minimal database privileges to limit damage from successful injection. Conduct a database audit to check for unauthorized access or modifications.

Patch guidance

Contact the Hotel and Tourism Reservation System vendor for patches addressing this vulnerability. Verify patch availability and version numbers directly from their security advisories. Test patches in a non-production environment before deployment. Given the high exploitability and public disclosure, prioritize patching within your change management schedule.

Detection guidance

Monitor web server and database logs for SQL syntax errors, unusual database queries, or access attempts with SQL metacharacters (quotes, semicolons, UNION operators) in the room parameter. Deploy intrusion detection signatures targeting SQL injection payloads. Look for multiple failed or anomalous database query attempts. Check application access logs for /details.php requests containing encoded or obfuscated SQL commands.

Why prioritize this

This vulnerability merits urgent attention due to the HIGH CVSS score (7.3), public exploit disclosure, remote exploitability without authentication, and potential exposure of sensitive guest and payment data. The hospitality sector frequently handles personal and financial information, making this a prime target for data theft. Unpatched instances are at immediate risk of compromise.

Risk score, explained

The CVSS 3.1 score of 7.3 reflects a network-accessible, unauthenticated attack that can compromise confidentiality, integrity, and availability. The low attack complexity indicates minimal technical barriers to exploitation. The score does not account for public disclosure or active threat activity, factors that elevate real-world risk beyond the base score.

Frequently asked questions