CVE-2020-26168

The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3,...

9.8 Critical

The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3, and Jet Enterprise 4.x through 4.2, doesn't verify properly the password in some system-user-dn scenarios. As a result, users (clients/members) can be authenticated even if they provide invalid passwords.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.60%Up 0.6 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2020-26168
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-287
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-26168
Updated: 2026-11-02

EUVDEUVD-2020-18793 No score

Record: EUVD-2020-18793
Updated: 2026-11-03

GitHub AdvisoriesGHSA-whg4-vj5j-j9x2 No score

The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3,...

Record: GHSA-whg4-vj5j-j9x2
Weakness: CWE-287
Updated: 2026-11-02

OSV 9.8

Record: CVE-2020-26168
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-26168 is a critical vulnerability (CVSS 9.8) in Hazelcast, published November 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.60%, the 75th percentile. No source names a fixed version.