CVE-2020-37113

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-434

Affected software

Vendor	Product	Versions
Openeclass	GUnet OpenEclass	1.7.3 (2007)

References

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

Timeline

Published: Feb 3, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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