CVE-2026-13527
Received Received - Intake

SQL Injection in Class and Exam Timetabling System

Publication date: 2026-06-29

Last updated on: 2026-06-29

Assigner: VulDB

Description
A vulnerability has been found in SourceCodester Class and Exam Timetabling System 1.0. The affected element is an unknown function of the file /preview4.php. Such manipulation of the argument course_year_section leads to sql injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-06-29
Last Modified
2026-06-29
Generated
2026-06-29
AI Q&A
2026-06-29
EPSS Evaluated
N/A
NVD
CVE-2026-13527
EUVD
EUVD-2026-40024

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-13527 is a critical SQL injection vulnerability found in the Class and Exam Timetabling System version 1.0, specifically in the /preview4.php file. The vulnerability occurs due to improper input validation of the course_year_section parameter, which allows attackers to inject malicious SQL queries remotely without needing authentication.

This flaw enables attackers to perform various SQL injection techniques such as boolean-based blind, error-based, time-based blind, and UNION query attacks.

Impact Analysis

Exploiting this vulnerability can lead to unauthorized access to the database, manipulation of data, leakage of sensitive information, potential full system takeover, and disruption of services.

Detection Guidance

This vulnerability can be detected by testing the /preview4.php endpoint with various SQL injection payloads targeting the course_year_section parameter. Common detection methods include sending boolean-based blind, error-based, time-based blind, and UNION query payloads to observe abnormal responses or delays.

For example, you can use curl or similar tools to send crafted requests and analyze the responses for SQL injection signs.

  • curl -G 'http://target/preview4.php' --data-urlencode "course_year_section=1' OR '1'='1"
  • curl -G 'http://target/preview4.php' --data-urlencode "course_year_section=1' UNION SELECT NULL-- "
  • Observe response delays or error messages that indicate SQL injection vulnerability.
Mitigation Strategies

Immediate mitigation steps include implementing prepared statements with parameter binding to prevent SQL injection.

Additionally, apply strict input validation on the course_year_section parameter to ensure only expected values are accepted.

Minimize database user permissions to limit the impact of a potential exploit.

Conduct regular security audits and monitoring to detect and prevent exploitation attempts.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-13527. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart