CVE-2023-1728 Unrestricted Upload of File with Dangerous Type in Fernus LMS

Critical 9.8 Published 4 Apr 2023 Updated 22 May 2026

Attackers can upload malicious files to Fernus LMS to execute arbitrary OS commands or inject server-side includes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-1728?

CVE-2023-1728 is a critical vulnerability in Fernus Informatics LMS, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Unrestricted Upload of File with Dangerous Type vulnerability in Fernus Informatics LMS allows OS Command Injection, Server Side Include (SSI) Injection.

This issue affects LMS: before 23.04.03.

Weakness: CWE-434

Which versions are affected by CVE-2023-1728?

It affects 1 product.

Products include Fernus Learning Management Systems.

How do I fix CVE-2023-1728?

No fix has been published for CVE-2023-1728 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-1728 being exploited?

There is no known exploitation of CVE-2023-1728 in the wild and no public exploit code.

Sources

Also known as GHSA-7c26-wxq9-97c9.