CVE-2020-37113
GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-434 |
| Vendor | openeclass |
| Product | gunet openeclass |
| Published | Feb 3, 2026 |
| Last Updated | Jul 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Openeclass / GUnet OpenEclass
1.7.3 (2007)
References
exploit-db.com: https://www.exploit-db.com/exploits/48163 openeclass.org: https://www.openeclass.org/ download.openeclass.org: https://download.openeclass.org/files/docs/1.7/CHANGES.txt vulncheck.com: https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass
Credits
emaragkos