CVE-2020-37113

GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass

CVSS 8.7 HIGHEPSS 0.8%CWE-434

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

03 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Openeclass · GUnet OpenEclass

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References

https://download.openeclass.org/files/docs/1.7/CHANGES.txt https://www.exploit-db.com/exploits/48163 https://www.openeclass.org/https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass