Vulnerability · Published Jan 8, 2026 · Assigned by GitHub_M
CVE-2026-22241Open eClass has Unrestricted File Upload that Leads to Remote Code Execution (RCE)
High 7.3
In plain English
A high-severity unrestricted file upload in openeclass from gunet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 88% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| gunet | openeclass | < 4.2 |
Weakness: CWE-434 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
References
- https://github.com/gunet/openeclass/security/advisories/GHSA-rf6j-xgqp-wjxg x_refsource_CONFIRM
- https://github.com/gunet/openeclass/security/advisories/GHSA-gq72-7mwg-424r x_refsource_MISC
- https://github.com/gunet/openeclass/commit/3f9d267b79812a4dd708bb1302339e6a5abe67d9 x_refsource_MISC
- https://twelvesec.com/2026/01/16/rce-via-arbitrary-file-upload-at-open-eclass/