Arbitrary file upload in Gunet Open Eclass Platform
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Gunet Open Eclass Platform — versions 1.7.3
- Openeclass Gunet — versions 1.7.3 (2007)
Weakness classification (CWE)
References
- ExploitDB-48163 (Exploit, exploit, Third Party Advisory, VDB Entry)
- Official Vendor Homepage (Product, product)
- Changelog (patch, Release Notes)
- VulnCheck Advisory: GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-37113?
- CVE-2020-37113 is a high-severity vulnerability in Gunet Open Eclass Platform, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-02-03.
- How severe is CVE-2020-37113?
- High severity. CVSS v3 base score is 8.8 out of 10.