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Public proof of conceptFix available

CVE-2026-22241

A public proof of concept exists; no exploitation attested.

  • Published2026-01-08
  • Fixed in4.1
  • WeaknessCWE-434

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-01-0815:15CVE publishedNVD
  2. 2026-04-29Exploit-DB entryExploit-DB

Versions per branch

NVD
Openeclass
BranchAffectedFixed in
4.1< 4.14.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • gunet openeclass
    Affected
    • = < 4.2no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-01-23

Fix

  1. Update Openeclass to 4.1

Advisories and patches

Detection

read 2026-11-09 09:28 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-52519
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2026-01-08
  • CNACVSS 4.07.3known since 2026-10-23
  • NVDCVSS 3.17.2read 2026-10-23
  • CNAweakness (CWE)CWE-434known since 2026-10-23
  • FIRST EPSSEPSS score3.3 %2026-11-08
  • PoC-in-GitHubproof of concept3known since 2026-11-09
  • Exploit-DBdetectionread 2026-11-09

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 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/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
Published
2026-01-08
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2026-22241?

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.

Is CVE-2026-22241 actively exploited?

A proof-of-concept exploit exists for CVE-2026-22241, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-22241?

CVE-2026-22241 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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