CVE-2026-15597 in Class and Exam Timetabling System
Summary
by MITRE • 07/14/2026
A security flaw has been discovered in SourceCodester Class and Exam Timetabling System 1.0/2.php. This affects an unknown function of the file /edit_exam2.php. Performing a manipulation of the argument ID results in sql injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
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Analysis
by VulDB Data Team • 07/14/2026
The vulnerability identified in SourceCodester Class and Exam Timetabling System 1.0/2.php represents a critical sql injection flaw that compromises the system's database integrity and confidentiality. This security weakness exists within the /edit_exam2.php file where an unknown function fails to properly validate or sanitize user input parameters, specifically the ID argument that controls database operations. The vulnerability stems from insufficient input validation mechanisms that allow malicious actors to inject arbitrary sql commands through manipulated query parameters, potentially enabling unauthorized database access and data manipulation.
The technical implementation of this vulnerability follows standard sql injection attack patterns where the application directly incorporates user-supplied ID values into sql queries without proper sanitization or parameterized query construction. When an attacker manipulates the ID argument, the system processes these inputs directly within sql statements, creating opportunities for attackers to execute malicious commands such as UNION SELECT operations, data extraction, or even database modification and deletion commands. This flaw operates at the application layer and can be exploited through remote access points since no local privileges are required for exploitation.
The operational impact of this vulnerability extends beyond simple data theft, potentially enabling full system compromise through unauthorized database access. Attackers could extract sensitive information including user credentials, personal data, and system configurations stored within the database. The public availability of exploit code increases the risk profile significantly as it allows automated attacks against vulnerable systems without requiring advanced technical skills. This vulnerability directly maps to CWE-89 which classifies sql injection as a weakness where untrusted data is embedded into sql commands, and aligns with ATT&CK technique T1190 for exploiting vulnerabilities in web applications.
Mitigation strategies should focus on implementing proper input validation and parameterized queries throughout the application codebase. The system requires immediate deployment of input sanitization mechanisms that filter or escape special characters used in sql injection attacks, combined with prepared statements that separate sql commands from data inputs. Additionally, access controls should be implemented to restrict database permissions for web applications and regular security audits should be conducted to identify similar vulnerabilities across other application functions. Network-level protections such as web application firewalls can provide additional defense-in-depth measures while proper code reviews and secure coding practices should be enforced during future development cycles to prevent recurrence of such vulnerabilities.