Vulnerability · Published Feb 3, 2026 · Assigned by GitHub_M

CVE-2026-24673Open eClass Has File Upload Filter Bypass via ZIP Archive Extraction

Medium 4.3

In plain English

A medium-severity unrestricted file upload in openeclass from gunet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 78.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
gunet	openeclass	< 4.2

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

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