Home/CVE/GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renamin
CVE

CVE-2020-37113

GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renamin

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.

HIGH · CVSS 8.8 EPSS 0.00246
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  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-434Unrestricted Upload of File with Dangerous Type
▤

Affected Products & Versions

1
gunet open eclass platformall versions
⚠

Public Exploits & PoCs

1
pocwww.exploit-db.com · 48163www.exploit-db.com
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · disclosure@vulncheck.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Feb 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://download.openeclass.org/files/docs/1.7/CHANGES.txtRelease Notes
https://www.openeclass.org/Product
https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypassThird Party Advisory
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