CVE-2020-37113

GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass

Published Feb 3, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:openeclass:openeclass:1.7.3:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Gunet
Gunet open Eclass Platform
CPEs cpe:2.3:a:gunet:open_eclass_platform:1.7.3:*:*:*:*:*:*:*
Vendors & Products Gunet
Gunet open Eclass Platform
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Openeclass
Openeclass openeclass
Vendors & Products Openeclass
Openeclass openeclass
Type Values Removed Values Added
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.
Title GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 28, 2026, 1:47 AM
Reserved
Feb 3, 2026, 4:27 PM
Status
Analyzed
Published
Feb 3, 2026, 6:16 PM
Modified
Jun 17, 2026, 3:17 AM