Arbitrary file upload in Gunet Openeclass
CVE-2026-24673
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a file upload validation bypass vulnerability allows attackers to upload files with prohibited extensions by embedding them inside ZIP archives and extracting them using the application’s built-in decompression functionality. This issue has been patched in version 4.2.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Gunet Openeclass — versions < 4.2
- Gunet Open Eclass Platform
Weakness classification (CWE)
References
- github.com/gunet/openeclass/security/advisories/GHSA-3g4j-56gp-v6wv (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-24673?
- CVE-2026-24673 is a medium-severity vulnerability in Gunet Openeclass, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 4.3/10. Published 2026-02-03.
- How severe is CVE-2026-24673?
- Medium severity. CVSS v3 base score is 4.3 out of 10.