VDB-411871 · Submit #954961 · CVE-2026-103115

OS4ED openSIS-Classic up to 9.3 Student Search CustomFieldsFnc.php cust sql injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$0-$5k	2.09-

Summaryinfo

A vulnerability was found in OS4ED openSIS-Classic up to 9.3. It has been classified as critical. This impacts an unknown function of the file functions/CustomFieldsFnc.php of the component Student Search. This manipulation of the argument cust causes sql injection. This vulnerability is handled as CVE-2026-103115. The attack can be initiated remotely. Additionally, an exploit exists. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in OS4ED openSIS-Classic up to 9.3 and classified as critical. Affected by this vulnerability is an unknown code block of the file functions/CustomFieldsFnc.php of the component Student Search. The manipulation of the argument cust with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-103115. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet. By approaching the search of inurl:functions/CustomFieldsFnc.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

OS4ED

Name

openSIS-Classic

Version

License

open-source

Website

Product: https://github.com/OS4ED/openSIS-Classic/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Sql injection
CWE: CWE-89 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/30/2026 Advisory disclosed
09/30/2026 +0 days VulDB entry created
09/30/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 475
Status: Confirmed

CVE: CVE-2026-103115 (🔒)
GCVE (CVE): GCVE-0-2026-103115
GCVE (VulDB): GCVE-100-411871
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/30/2026 07:56
Changes: 09/30/2026 07:56 (58)
Complete: 🔍
Submitter: 360alphalab
Cache ID: 216::103

Submitinfo

Accepted

Submit #954961: os4ed openSIS Classic (Community Edition) 9.3 SQL Injection (by 360alphalab)