CVE-2026-22241: Open eClass has Unrestricted File Upload that Leads to Remote Code Execution (RCE)
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an arbitrary file upload vulnerability in the theme import functionality enables an attacker with administrative privileges to upload arbitrary files on the server's file system. The main cause of the issue is that no validation or sanitization of the file's present inside the zip archive. This leads to remote code execution on the web server. Version 4.2 patches the issue.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-22241?
CVE-2026-22241 is considered a high-severity vulnerability due to its potential to allow arbitrary file uploads by attackers with administrative privileges.
How do I fix CVE-2026-22241?
To fix CVE-2026-22241, upgrade to Open eClass version 4.2 or later, which has patched the arbitrary file upload vulnerability.
What type of vulnerability is CVE-2026-22241?
CVE-2026-22241 is classified as an arbitrary file upload vulnerability in the Open eClass course management system.
Who is affected by CVE-2026-22241?
CVE-2026-22241 affects all versions of Open eClass prior to version 4.2.
What can an attacker do with CVE-2026-22241?
An attacker with administrative privileges can exploit CVE-2026-22241 to upload arbitrary files to the server, potentially compromising the system.