CVE-2020-37113

GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://download.openeclass.org/files/docs/1.7/CHANGES.txt	Release Notes
https://www.exploit-db.com/exploits/48163	Exploit Third Party Advisory VDB Entry
https://www.openeclass.org/	Product
https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gunet:open_eclass_platform:1.7.3:*:*:*:*:*:*:*

History

12 Feb 2026, 18:33

Type	Values Removed	Values Added
First Time		Gunet Gunet open Eclass Platform
CPE		cpe:2.3:a:gunet:open_eclass_platform:1.7.3:::::::*
References	~~() https://download.openeclass.org/files/docs/1.7/CHANGES.txt -~~	() https://download.openeclass.org/files/docs/1.7/CHANGES.txt - Release Notes
References	~~() https://www.exploit-db.com/exploits/48163 -~~	() https://www.exploit-db.com/exploits/48163 - Exploit, Third Party Advisory, VDB Entry
References	~~() https://www.openeclass.org/ -~~	() https://www.openeclass.org/ - Product
References	~~() https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass -~~	() https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass - Third Party Advisory

03 Feb 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-03 18:16

Updated : 2026-02-12 18:33

NVD link : CVE-2020-37113

Mitre link : CVE-2020-37113

CVE.ORG link : CVE-2020-37113

JSON object : View

Products Affected

gunet

open_eclass_platform

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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