๐Ÿ›ก๏ธ CVE-2026-9801
๐ŸŸก CVSS 4.9 โ€” Medium โœ… No Known Exploit CWE-1284 NVD
4.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a malformed LDAP password policy response during a password authentication request, the attacker can trigger an OutOfMemoryError. This causes the Keycloak Java Virtual Machine (JVM) to terminate, leading to a denial of service (DoS) for all realms on the affected node.

Details

Severity MEDIUM
CVSS Score 4.9
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE CWE-1284
Public Exploit โœ… No
Source NVD
Published 2026-05-28
Updated 2026-06-11
Modified 2026-06-10
Fix URL N/A

Affected Packages

Software From version Fixed in
build-of-keycloak โ€” โ€”
unknown โ€” โ€”

Similar Threats

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