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CVE-2020-37113

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CVE-2020-37113

Published: Feb 3, 2026

Modified: Feb 6, 2026

PUBLISHED

CVSS v3.1

8.8

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.

VendorProductVersions

Openeclass

GUnet OpenEclass

affected
1.7.3 (2007)

Weaknesses (CWE)

CWE-434

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

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