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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-22241- CVSS 4.0
- 7.3 High
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 - Weakness
- CWE-434
- Updated
- 2026-11-02
EUVDEUVD-2026-1672
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.
- Record
EUVD-2026-1672- CVSS 4.0
- 7.3 High
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 - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-22241- CVSS 4.0
- 7.3 High
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 - CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2026-22241- CVSS 4.0
- 7.3 High
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 - Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | GUnet OpenEclass E-learning platform < 4.2 - Remote Code Execution (RCE) | 2026-04-29 |
| PoC in GitHub | 0xBlackash/CVE-2026-22241 | 2026-04-18 |
| PoC in GitHub | Ashifcoder/CVE-2026-22241 | 2026-01-12 |
| PoC in GitHub | CVEs-Labs/CVE-2026-22241 | 2026-02-18 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, Exploit-DB, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-22241 is a high vulnerability (CVSS 7.3) in Gunet Openeclass, published January 8, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.26%, the 88th percentile. No source names a fixed version.
References
github.com/gunet/openeclass/security/advisories/GHSA-rf6j-xgqp-wjxg
twelvesec.com/2026/01/16/rce-via-arbitrary-file-upload-at-open-eclass
nvd.nist.gov/vuln/detail/CVE-2026-22241