CVE-2020-37113

HIGH EPSS 51.3%
Published Feb 3, 20264mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
High
Find Similar
Published Feb 3, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
51.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

Affected Products 1

VendorProductVersionRange
gunetopen_eclass_platform1.7.3any

References 4

  • download.openeclass.org https://download.openeclass.org/files/docs/1.7/CHANGES.txt
    Release Notes
  • exploit-db.com https://www.exploit-db.com/exploits/48163
    ExploitThird Party AdvisoryVDB Entry
  • openeclass.org https://www.openeclass.org/
    Product
  • vulncheck.com https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.