Overview

CVE-2026-14755 is a SQL injection vulnerability found in the Hotel and Tourism Reservation system, specifically in the /admin/reservations.php file of the Reservations Management Page. This vulnerability allows remote attackers to manipulate the 'delete' argument, leading to SQL injection attacks. The goal of this analysis is to provide a deep understanding of the threat and offer practical defensive strategies for security practitioners and technical learners.

Understanding the Vulnerability / Threat

Root Cause Analysis

The root cause of CVE-2026-14755 is a SQL injection vulnerability, which falls under CWE-74 and CWE-89 categories. This type of vulnerability occurs when user input is not properly sanitized or validated, allowing attackers to inject malicious SQL code.

Attack Surface & Vector

The attack surface for this vulnerability is the /admin/reservations.php file in the Reservations Management Page of the Hotel and Tourism Reservation system. The attack vector is remote, with an attacker able to initiate the attack without any privileges or user interaction. The CVSS v3.1 vector string for this vulnerability is: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploitation Mechanics — Scenario Walkthrough

Scenario: Compromising a Hotel and Tourism Reservation System via SQL Injection

Initial Position: An attacker has network access to the Hotel and Tourism Reservation system and can reach the /admin/reservations.php page.

Triggering the Flaw: The attacker crafts a malicious HTTP request to the /admin/reservations.php page, manipulating the 'delete' argument to inject malicious SQL code. For example, the attacker might append a SQL injection payload to the 'delete' parameter, such as delete=1' OR '1'='1.

What Breaks: The SQL query executed by the /admin/reservations.php page does not properly sanitize the 'delete' argument, allowing the injected SQL code to execute. This could lead to unauthorized access to sensitive data, modification of database contents, or disruption of database operations.

Attacker's Prize: The attacker can now execute arbitrary SQL queries, potentially leading to data theft, lateral movement within the network, or further exploitation of vulnerabilities.

Real-World Impact

The impact of CVE-2026-14755 can be significant, as it allows remote attackers to compromise the confidentiality, integrity, and availability of the Hotel and Tourism Reservation system. An attacker could exploit this vulnerability to:

  • Extract sensitive data, such as user credentials or reservation details
  • Modify database contents, leading to data tampering or corruption
  • Disrupt database operations, causing denial-of-service conditions

Detection & Defense

Immediate Mitigations

To address CVE-2026-14755, apply the following mitigations:

  • Upgrade the Hotel and Tourism Reservation system to a patched version, if available
  • Implement input validation and sanitization for the 'delete' argument in the /admin/reservations.php page
  • Use prepared statements with parameterized queries to prevent SQL injection

Detection Strategies

Defenders can detect exploitation attempts by:

  • Monitoring network traffic for suspicious HTTP requests to the /admin/reservations.php page
  • Analyzing system logs for signs of SQL injection attacks, such as unusual query patterns or error messages
  • Implementing SIEM rules to identify potential SQL injection attacks

Long-Term Hardening

To prevent similar vulnerabilities in the future:

  • Implement a web application firewall (WAF) to detect and block SQL injection attacks
  • Conduct regular security audits and penetration testing to identify vulnerabilities
  • Provide training and awareness programs for developers on secure coding practices and SQL injection prevention

Key Takeaways

  • SQL injection vulnerabilities can have significant impacts on confidentiality, integrity, and availability
  • Input validation and sanitization are crucial in preventing SQL injection attacks
  • Defenders should monitor network traffic and system logs to detect potential SQL injection attacks
  • Regular security audits and penetration testing can help identify vulnerabilities before they are exploited

Sources