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CVE-2026-55740 Nur-Alam39 CVE debrief

CVE-2026-55740 is a critical SQL injection vulnerability in the Nur-Alam39 bus ticket system. The vulnerability allows an unauthenticated attacker to inject arbitrary SQL, potentially leading to data breaches and system compromise. The vulnerability exists in the bus_info.php file, where user input is directly concatenated into a MySQL query without proper sanitization. The database connection uses the MySQL root account with an empty password, increasing the potential impact. A CVSS score of 9.3 indicates a critical vulnerability. Users of the affected system should immediately apply patches or mitigations.

Vendor
Nur-Alam39
Product
bus-ticket
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-18
Original CVE updated
2026-06-22
Advisory published
2026-06-18
Advisory updated
2026-06-22

Who should care

Administrators and users of the Nur-Alam39 bus ticket system, as well as security teams responsible for monitoring and patching vulnerabilities, should be aware of this critical vulnerability.

Technical summary

The CVE-2026-55740 vulnerability is caused by a lack of input validation and sanitization in the bus_info.php file. Specifically, the $busid parameter received via HTTP POST is concatenated directly into a MySQL query without proper escaping or parameterization. This allows an attacker to inject arbitrary SQL, potentially leading to data breaches and system compromise. The vulnerability has a CVSS score of 9.3, indicating a critical severity.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates to the Nur-Alam39 bus ticket system as soon as possible.
  • Use prepared statements with parameterized queries to prevent SQL injection.
  • Sanitize and validate all user input to prevent injection attacks.
  • Use a secure database connection with a non-root user account and strong password.
  • Monitor the system for suspicious activity and implement additional security measures as needed.
  • Consider using a web application firewall (WAF) to detect and prevent SQL injection attacks.

Evidence notes

The vulnerability was reported in the Nur-Alam39 bus ticket system, which has no released versions. The latest commit to the system was made on an unspecified date. The vulnerability was discovered in the bus_info.php file, specifically in the handling of the $busid parameter. The CVE-2026-55740 record and NVD detail provide additional information on the vulnerability.

Official resources

public