CVE-2026-19825 in Simple Client Management System
Summary
by MITRE • 08/14/2026
A security vulnerability has been detected in SourceCodester Simple Client Management System 1.0. The impacted element is an unknown function of the file /classes/Master.php?f=save_service. The manipulation of the argument ID leads to sql injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.
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Analysis
by VulDB Data Team • 08/14/2026
The vulnerability identified in SourceCodester Simple Client Management System 1.0 represents a critical sql injection flaw within the application's backend processing logic. This weakness exists in the Master.php file at the endpoint f=save_service where user-supplied input is improperly handled without adequate sanitization or validation mechanisms. The specific function responsible for saving service records contains a direct database query that incorporates user-provided ID parameters without proper parameterization or input filtering, creating an exploitable path for malicious actors to manipulate database operations through crafted input payloads.
The technical nature of this vulnerability aligns with common weakness enumeration CWE-89 which specifically addresses sql injection vulnerabilities where untrusted data is directly incorporated into sql commands. The attack vector operates remotely through the web interface, allowing attackers to submit maliciously formatted ID values that bypass normal input validation controls. This enables unauthorized individuals to execute arbitrary sql commands against the underlying database system, potentially leading to complete database compromise including data theft, modification, or deletion. The public disclosure of exploit code significantly increases the risk profile as automated attack tools can readily leverage this vulnerability without requiring advanced technical skills.
The operational impact of this vulnerability extends beyond simple data exposure to encompass full system compromise potential within the application's security boundaries. Attackers can leverage the sql injection to extract sensitive customer information, manipulate service records, escalate privileges within the application, and potentially establish persistent access points through database-level backdoors. The remote execution capability means that adversaries can exploit this without requiring physical access or network proximity to the target system. This vulnerability directly maps to attack techniques documented in the mitre ATT&CK framework under T1071.004 for application layer protocol manipulation and T1566 for credential access through exploitation of web applications.
Mitigation strategies should focus on immediate implementation of parameterized queries or prepared statements throughout the Master.php file and all related database interaction functions to prevent direct sql command construction from user input. Input validation controls must be strengthened with proper type checking, length restrictions, and character set filtering to reject malicious payloads before they reach database processing layers. The application should implement proper output encoding and error handling to prevent information disclosure that could aid attackers in crafting successful exploits. Additionally, network-level protections including web application firewalls and intrusion detection systems should be deployed to monitor for suspicious sql injection patterns and block known exploit signatures. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities throughout the application's codebase and ensure proper database access controls are maintained through principle of least privilege configurations for database accounts used by the application.