CVE-2025-70141 in Customer Support System
Summary
by MITRE • 02/18/2026
SourceCodester Customer Support System 1.0 contains an incorrect access control vulnerability in ajax.php. The AJAX dispatcher does not enforce authentication or authorization before invoking administrative methods in admin_class.php based on the action parameter. An unauthenticated remote attacker can perform sensitive operations such as creating customers and deleting users (including the admin account), as well as modifying or deleting other application records (tickets, departments, comments), resulting in unauthorized data modification.
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Analysis
by VulDB Data Team • 02/23/2026
The CVE-2025-70141 vulnerability represents a critical access control flaw in the SourceCodester Customer Support System version 1.0 that fundamentally undermines the application's security posture. This weakness exists within the ajax.php file which serves as the central AJAX dispatcher for the system. The vulnerability stems from the application's failure to properly validate user authentication status before executing administrative functions, creating a pathway for unauthorized actors to bypass normal security controls. The flaw is particularly concerning because it affects core administrative operations that should only be accessible to authenticated administrators, yet can be invoked directly through the AJAX interface without proper credential verification.
The technical implementation of this vulnerability demonstrates a classic improper access control issue that aligns with CWE-285, which addresses insufficient authorization in software systems. The ajax.php file processes requests based on an action parameter that determines which function in admin_class.php should be executed. When an attacker crafts a malicious request with specific action parameters, the system processes these commands without verifying whether the requester possesses appropriate administrative privileges. This design flaw allows for arbitrary execution of administrative functions including user management operations, record modifications, and data deletion activities. The vulnerability is further exacerbated by the fact that the system does not implement any session validation or role-based access controls during the AJAX request processing phase.
Operationally, the impact of this vulnerability extends far beyond simple data exposure, as it enables complete unauthorized administrative control over the customer support system. An unauthenticated attacker can create new customer accounts, delete existing user accounts including the administrator account itself, and modify or delete critical application records such as support tickets, department configurations, and user comments. This comprehensive access allows for data manipulation, service disruption, and potential complete system compromise. The vulnerability's remote nature means that attackers can exploit it from anywhere on the internet without requiring physical access to the system or knowledge of valid credentials. The implications include potential data loss, unauthorized access to sensitive customer information, service availability disruption, and complete system takeover.
The remediation approach for this vulnerability must address the fundamental authentication and authorization gaps in the AJAX processing pipeline. Organizations should implement robust session validation mechanisms that verify user credentials and administrative privileges before executing any administrative functions. The solution requires enforcing proper access control checks at the AJAX dispatcher level, ensuring that all administrative operations are protected by authentication tokens or session identifiers. Additionally, the system should implement role-based access controls that validate user permissions for each specific action being requested. Security measures should include input validation of action parameters, logging of administrative operations, and implementing rate limiting to prevent abuse of the vulnerability. The fix aligns with ATT&CK technique T1078 which addresses legitimate credentials and privilege escalation, and CWE-285 which specifically addresses insufficient authorization controls in application systems. Organizations must also consider implementing additional security layers such as web application firewalls and regular security testing to prevent similar vulnerabilities from being introduced in future versions of the system.