CVE-2020-37113

8.8 HIGH
Published: February 03, 2026 Modified: February 12, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://download.openeclass.org/files/docs/1.7/CHANGES.txt
Source: disclosure@vulncheck.com
Release Notes
https://www.exploit-db.com/exploits/48163
Source: disclosure@vulncheck.com
Exploit Third Party Advisory VDB Entry
https://www.openeclass.org/
Source: disclosure@vulncheck.com
Product
https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass
Source: disclosure@vulncheck.com
Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
0.2%
44th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-434

Affected Vendors

gunet

Related CVEs

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