CVE-2020-37113
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductGunet Open Eclass Platform
PublishedFeb 3, 2026
First seenFeb 3, 2026
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gunet open_eclass_platform | 1.7.3 | — |
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