CVE-2026-24673CWE-434

Open eClass Has File Upload Filter Bypass via ZIP Archive Extraction

Medium · published February 3, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
19.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00280 · 19.4th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-02-03T16:56Z
EPSS history
Timeline
  • 03 FEB 16:56Z
    Open eClass Has File Upload Filter Bypass via ZIP Archive Extraction
    cvelistv5