CVE-2026-22241

Name: CVE-2026-22241
Creator: NVD / NIST
Published: 2026-01-08T15:15:45.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 3.08%

Last modified Jun 17, 2026

CVE-2026-22241 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. 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. EPSS estimates a 3.08% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.3/10

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

3.08%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Openeclass	Openeclass	< 4.1

References

https://github.com/gunet/openeclass/commit/3f9d267b79812a4dd708bb1302339e6a5abe67d9Patch
https://github.com/gunet/openeclass/security/advisories/GHSA-gq72-7mwg-424rExploit, Third Party Advisory
https://github.com/gunet/openeclass/security/advisories/GHSA-rf6j-xgqp-wjxgExploit, Third Party Advisory
https://github.com/gunet/openeclass/security/advisories/GHSA-gq72-7mwg-424rExploit, Third Party Advisory
https://twelvesec.com/2026/01/16/rce-via-arbitrary-file-upload-at-open-eclass/Exploit, Third Party Advisory
https://github.com/gunet/openeclass/security/advisories/GHSA-rf6j-xgqp-wjxgExploit, Third Party Advisory

Timeline

Published: Jan 8, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-22241?

How severe is CVE-2026-22241?

CVE-2026-22241 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 3.08% probability of exploitation in the next 30 days.

How do I fix CVE-2026-22241?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-22241?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST