CVE-2026-22241highCWE-434

CVE-2026-22241: high-severity vulnerability in gunet openeclass

Open eClass has Unrestricted File Upload that Leads to Remote Code Execution (RCE)

Published · Updated

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 7.3epss 3.3%
from disclosure to weapon4 days
Published on NVDJan 8
1st PoC+4d
exploitation probability
3.3%top 12% of all CVEs
observed exploitation
nono source reports it
4 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 · openeclass
public PoCs found — 4
exploitdbwww.exploit-db.com/exploits/52519unverifiedgithubgithub.com/Ashifcoder/CVE-2026-22241★ 1githubgithub.com/0xBlackash/CVE-2026-22241★ 1githubgithub.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.
Related CVEs — gunet openeclass

In the same product, most dangerous first.

CVE-2024-38530CRITICALOpen eClass Platform allows Arbitrary File Upload in "modules/h5p/save.php"EPSS 0.8%CVE-2026-24773HIGHOpen eClass Unauthenticated IDOR Allows Access to Arbitrary User FilesEPSS 0.4%CVE-2026-24664MEDIUMOpen eClass is Vulnerable to Username Enumeration via Login Response DiscrepanciesEPSS 0.3%CVE-2026-24673MEDIUMOpen eClass Has File Upload Filter Bypass via ZIP Archive ExtractionEPSS 0.3%CVE-2026-24668MEDIUMOpen eClass Broken Access Control Allows Students to Add Content to Course UnitsEPSS 0.2%CVE-2026-24670MEDIUMOpen eClass Has Broken Access Control in Course Units Module Allows Students to Create UnitsEPSS 0.2%
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/