CVE-2026-24673

Open eClass Has File Upload Filter Bypass via ZIP Archive Extraction

State: Published
Severity: 4.3 Medium
Published: Feb 3, 2026
Updated: Feb 4, 2026
Reserved: Jan 23, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	GitHub_M

Weaknesses

CWE-434 Unrestricted Upload of File with Dangerous Type

Affected Products

Product	Versions
openeclassgunet	< 4.2Affected

References

https://github.com/gunet/openeclass/security/advisories/GHSA-3g4j-56gp-v6wv

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