VULNERABILITY INTELLIGENCE

CVE-2020-37113

CVSS score8.8 HIGH

EPSS probability0.93%

CISA KEVNot currently listed

Published2026-02-03

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

disclosure@vulncheck.com: CWE-434

Primary references

disclosure@vulncheck.com — Release Notes
disclosure@vulncheck.com — Exploit, Third Party Advisory, VDB Entry
disclosure@vulncheck.com — Product
disclosure@vulncheck.com — Third Party Advisory