Open eClass has Unrestricted File Upload that Leads to Remote Code Execution (RCE)
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.3epss 3.3%
from disclosure to weapon41 days
Published on NVDJan 8
1st PoC+41d
exploitation probability
3.3%top 13% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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.
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
Affected products
gunet · openeclasspublic PoCs found — 2
exploitdbwww.exploit-db.com/exploits/52519unverifiedgithubgithub.com/CVEs-Labs/CVE-2026-22241★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/gunet/openeclass/commit/3f9d267b79812a4dd708bb1302339e6a5abe67d9https://github.com/gunet/openeclass/security/advisories/GHSA-gq72-7mwg-424rhttps://github.com/gunet/openeclass/security/advisories/GHSA-rf6j-xgqp-wjxghttps://twelvesec.com/2026/01/16/rce-via-arbitrary-file-upload-at-open-eclass/