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TI-2026-17851 Aliases CVE-2026-22241

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

Priority HIGH 67CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03262 88th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix Fixed openeclass (gunet): 4.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gunetopeneclassbefore 4.24.2Patch availableCNA
  • openeclass Vendorgunet Affected before 4.2 Fixed in 4.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openeclass:openeclass:*:*:*:*:*:*:*:*before 4.1VulnerableOpeneclass
  • cpe:2.3:a:openeclass:openeclass:*:*:*:*:*:*:*:* Versions before 4.1 Vulnerable ·Openeclass

Remediation

  • Fix · CNA openeclass (gunet) Fixed in 4.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-22241

References

Exploit 3

Patch 1

  • TI-2024-25765 Open eClass Platform allows Arbitrary File Upload in "modules/h5p/save.php" CVSS 3.1CRITICAL 9.8
  • TI-2020-19251 GUnet OpenEclass 1.7.3 E-learning platform - phpMyAdmin Remote Access CVSS 4.0HIGH 8.7
  • TI-2020-19248 GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass CVSS 4.0HIGH 8.7
  • TI-2020-19250 GUnet OpenEclass 1.7.3 E-learning platform - Plaintext Password Storage CVSS 4.0HIGH 7.1
  • TI-2020-19247 GUnet OpenEclass 1.7.3 E-learning platform - 'month' SQL Injection CVSS 4.0HIGH 7.1
  • TI-2026-19974 Open eClass Unauthenticated IDOR Allows Access to Arbitrary User Files CVSS 3.1HIGH 7.5
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences