CVE-2026-24664

Open eClass is Vulnerable to Username Enumeration via Login Response Discrepancies

State: Published
Severity: 5.3 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 username enumeration vulnerability allows unauthenticated attackers to identify valid user accounts by analyzing differences in the login response behavior. This issue has been patched in version 4.2.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-204 Observable Response Discrepancy

Affected Products

Product	Versions
openeclassgunet	< 4.2Affected

References

https://github.com/gunet/openeclass/security/advisories/GHSA-c3wq-m629-5h2j

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