CVE-2026-22241: Openeclass remote code execution (CVSS 7.2)

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredHigh

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Openeclass< 4.1

Remediation

Fixed in

Openeclass≥ 4.1

Patch & vendor advisories

https://github.com/gunet/openeclass/commit/3f9d267b79812a4dd708bb1302339e6a5abe67d9

References

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

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-22241 being actively exploited?

CVE-2026-22241 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 3.26%.

How severe is CVE-2026-22241?

CVE-2026-22241 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 3.26% probability of exploitation.

Which products are affected by CVE-2026-22241?

Affected products include Openeclass.

How do I fix CVE-2026-22241?

Upgrade affected software to a fixed version, for example Openeclass 4.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-22241 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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