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OpenAdvisories
Medium · 5.3 CVE-2026-24664 EUVD-2026-5240

Open eClass is Vulnerable to Username Enumeration via Login Response Discrepancies

Published Feb 3, 2026 · Updated Feb 4, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
gunet openeclass < 4.2 —

References