CVE-2026-24664 Open eClass is Vulnerable to Username Enumeration via Login Response Discrepancies
Unauthenticated attackers can enumerate valid user accounts by analyzing login response discrepancies in Open eClass.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-24664?
CVE-2026-24664 is a medium-severity vulnerability in gunet openeclass, published on 3 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-204
Which versions are affected by CVE-2026-24664?
It affects 1 product.
Products include Gunet Open Eclass Platform.
How do I fix CVE-2026-24664?
No fix has been published for CVE-2026-24664 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-24664 being exploited?
There is no known exploitation of CVE-2026-24664 in the wild and no public exploit code.
Other vulnerabilities in gunet openeclass
- CVE-2020-37113 GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass
- CVE-2020-37116 GUnet OpenEclass 1.7.3 E-learning platform - phpMyAdmin Remote Access
- CVE-2026-24665 Open eClass is Vulnerable to Stored Cross-Site Scripting (XSS) via Student Assignment Upload
- CVE-2026-24669 Open eClass Insecure Password Reset Token Reuse Enables Account Takeover
- CVE-2026-24773 Open eClass Unauthenticated IDOR Allows Access to Arbitrary User Files
Sources
Also known as GHSA-c3wq-m629-5h2j.