---
id: CVE-2026-103115
title: OS4ED openSIS-Classic Student Search CustomFieldsFnc.php sql injection
summary: >-
  A security flaw has been discovered in OS4ED openSIS-Classic up to 9.3. This
  affects an unknown function of the file functions/CustomFieldsFnc.php of the
  component Student Search. The manipulation of the argument cust results in sql
  inje…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'
cvssSource: cna
cwe:
  - CWE-89
  - CWE-74
vendor: OS4ED
product: openSIS-Classic
affected:
  - openSIS-Classic 9.0
  - openSIS-Classic 9.1
  - openSIS-Classic 9.2
  - openSIS-Classic 9.3
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T12:15:12.251Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-103115'
references:
  - url: 'https://vuldb.com/vuln/411871'
    label: >-
      VDB-411871 | OS4ED openSIS-Classic Student Search CustomFieldsFnc.php sql
      injection
  - url: 'https://vuldb.com/vuln/411871/cti'
    label: 'VDB-411871 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-103115'
    label: CVE-2026-103115 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/954961'
    label: >-
      Submit #954961 | os4ed openSIS Classic (Community Edition) 9.3 SQL
      Injection
  - url: 'https://github.com/OS4ED/openSIS-Classic/issues/475'
  - url: 'https://github.com/OS4ED/openSIS-Classic/'
tags:
  - cve.org
ingestedAt: '2026-09-30T13:03:52.020Z'
---

## Overview

A security flaw has been discovered in OS4ED openSIS-Classic up to 9.3. This affects an unknown function of the file functions/CustomFieldsFnc.php of the component Student Search. The manipulation of the argument cust results in sql injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

## Affected

- `openSIS-Classic 9.0`
- `openSIS-Classic 9.1`
- `openSIS-Classic 9.2`
- `openSIS-Classic 9.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.