Cyber Resilience

CVE-2026-24664

MediumPublic PoC

Published: 03 February 2026

Published
03 February 2026
Modified
10 February 2026
KEV Added
—
Patch
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CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0010 27.8th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-24664 is a medium-severity Observable Response Discrepancy (CWE-204) vulnerability in Gunet Open Eclass Platform. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Credentials (T1589.001); ranked at the 27.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

issue has been patched in version 4.2.

CWE(s)
CWE-204

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1589.001 Credentials Reconnaissance
Adversaries may gather credentials that can be used during targeting.
attack.mitre.org →
T1110 Brute Force Credential Access
Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.
attack.mitre.org →
Why these techniques?

Username enumeration via login response differences directly enables gathering valid account identities (T1589.001) and facilitates subsequent brute-force or credential-stuffing attempts (T1110).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

Affected Assets

gunet
open eclass platform
≤ 4.2

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-30 Concealment and Misdirection
addresses: CWE-204

Fake or randomized responses remove distinguishable success/failure signals attackers rely on.

SI-11 Error Handling
addresses: CWE-204

Eliminates distinguishable response discrepancies in error conditions that could be exploited for reconnaissance.

References