CVE-2019-25499 in Simple Job Script
Summary
by MITRE • 03/04/2026
Simple Job Script contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the job_id parameter. Attackers can send POST requests to get_job_applications_ajax.php with malicious job_id values to bypass authentication, extract sensitive data, or modify database contents.
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Analysis
by VulDB Data Team • 03/06/2026
The vulnerability identified as CVE-2019-25499 represents a critical SQL injection flaw within the Simple Job Script web application that exposes organizations to significant security risks. This vulnerability resides in the application's handling of user input through the job_id parameter, which is processed in the get_job_applications_ajax.php endpoint. The flaw allows unauthenticated attackers to execute arbitrary SQL commands against the underlying database without requiring valid credentials or authentication tokens, fundamentally undermining the application's security posture.
The technical implementation of this vulnerability stems from improper input validation and sanitization within the web application's backend processing logic. When the job_id parameter is submitted through POST requests to the vulnerable endpoint, the application fails to properly escape or parameterize user-supplied input before incorporating it into SQL queries. This creates an exploitable condition where malicious actors can inject SQL payloads that manipulate the database query execution flow. The vulnerability specifically maps to CWE-89 which defines SQL injection as the insertion of malicious SQL code into input fields for execution by the database, making it a classic example of improper input handling in web applications.
The operational impact of this vulnerability extends far beyond simple data extraction, as it provides attackers with comprehensive database manipulation capabilities. Unauthenticated threat actors can leverage this weakness to bypass authentication mechanisms entirely, access sensitive user data including personal information and application credentials, and potentially escalate privileges within the database system. The vulnerability's exposure through the AJAX endpoint means that attackers can perform these operations silently in the background without triggering obvious security alerts, making detection significantly more challenging. This weakness also enables data integrity violations where attackers can modify or delete critical database records, potentially causing operational disruptions and data loss.
Organizations utilizing Simple Job Script must implement immediate remediation measures to address this vulnerability. The primary solution involves implementing proper input validation and parameterized query construction throughout the application's codebase, ensuring that all user-supplied parameters are properly escaped or validated before database interaction. Security controls should include input sanitization at multiple layers, including application-level filtering and database-level protection mechanisms. Additionally, implementing web application firewalls with SQL injection detection capabilities and regular security code reviews can provide additional defense-in-depth measures. The vulnerability's classification under ATT&CK technique T1190 highlights the importance of network-based detection and prevention strategies, as attackers may use this weakness as part of broader exploitation campaigns targeting web applications. Regular vulnerability assessments and penetration testing should be conducted to identify similar input validation weaknesses across the entire application stack, ensuring comprehensive protection against similar SQL injection threats that could compromise sensitive organizational data.