CVE-2026-13486
Received Received - Intake

SQL Injection in Class and Exam Timetabling System

Publication date: 2026-06-28

Last updated on: 2026-06-28

Assigner: VulDB

Description
A vulnerability was determined in SourceCodester Class and Exam Timetabling System 1.0/6.php. This impacts an unknown function of the file /preview6.php. Executing a manipulation of the argument course_year_section can lead to sql injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

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Meta Information

Published
2026-06-28
Last Modified
2026-06-28
Generated
2026-06-28
AI Q&A
2026-06-28
EPSS Evaluated
N/A
NVD
CVE-2026-13486
EUVD
EUVD-2026-39986

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
sourcecodester class_and_exam_timetabling_system 1.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

CVE-2026-13486 is a SQL injection vulnerability in the SourceCodester Class and Exam Timetabling System version 1.0, specifically in the /preview6.php file.

The vulnerability occurs due to improper input validation of the course_year_section parameter, which allows an attacker to inject malicious SQL queries remotely without needing authentication.

Attackers can exploit this flaw using various SQL injection techniques such as boolean-based blind, error-based, time-based blind, and UNION query attacks.

Impact Analysis

Exploitation of this vulnerability can lead to unauthorized access to the database, allowing attackers to view, modify, or delete sensitive data.

Attackers may also gain control over the system, cause service disruptions, and leak confidential information.

This can result in significant security breaches, data integrity issues, and operational downtime.

Detection Guidance

This vulnerability can be detected by testing the `course_year_section` parameter in the `/preview6.php` file for SQL injection flaws. Attackers may use payloads to perform boolean-based blind, error-based, time-based blind, and UNION query attacks.

To detect the vulnerability, you can use SQL injection testing tools or manual commands that inject SQL payloads into the `course_year_section` parameter and observe the responses.

  • Use curl or wget to send crafted requests with SQL injection payloads, for example: `curl 'http://target/preview6.php?course_year_section=1'` and then try payloads like `' OR '1'='1` or `' UNION SELECT NULL--` appended to the parameter.
  • Use automated tools such as sqlmap to test the parameter: `sqlmap -u "http://target/preview6.php?course_year_section=1" --batch`.
Mitigation Strategies

Immediate mitigation steps include implementing prepared statements and proper input validation on the `course_year_section` parameter to prevent SQL injection.

Additionally, minimize database permissions to limit the impact of a potential exploit and conduct regular security audits to detect and fix vulnerabilities.

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