CVE-2026-103116
Received Received - Intake

SQL Injection in openSIS-Classic Student List Search

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: VulDB

Description
A weakness has been identified in OS4ED openSIS-Classic up to 9.3. This impacts the function DBQuery of the file functions/GetStuListFnc.php of the component Student List Search Endpoint. This manipulation of the argument LO_sort causes sql injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

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Meta Information

Published
2026-09-30
Last Modified
2026-09-30
Generated
2026-09-30
AI Q&A
2026-09-30
EPSS Evaluated
N/A
NVD
CVE-2026-103116
EUVD
EUVD-2026-89947

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
os4ed opensis-classic to 9.3 (inc)

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

This is a reflected SQL injection vulnerability in OS4ED openSIS-Classic up to version 9.3. The issue is in the Student List Search Endpoint where the LO_sort parameter is directly used in an SQL ORDER BY clause without validation. Attackers can inject malicious SQL commands remotely.

Detection Guidance

To detect this SQL injection vulnerability in openSIS-Classic, inspect network traffic for requests targeting the Student List Search Endpoint with the LO_sort parameter. Look for unusual SQL syntax in the parameter values or error messages in responses. Check logs for time delays in responses, which may indicate time-based blind SQL injection attempts.

Impact Analysis

Attackers with low-privileged accounts could extract sensitive data like database contents, version, or schema. They may also perform time-based blind SQL injection or error-based data extraction through crafted requests.

Mitigation Strategies

Immediately update openSIS-Classic to the latest patched version if available. If no patch exists, restrict access to the Student List Search Endpoint and disable low-privileged teacher accounts until a fix is applied. Implement input validation for the LO_sort parameter and use parameterized queries for the ORDER BY clause.

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