#VU105509 Improper access control in Keycloak - CVE-2025-1391
Published: March 11, 2025
Vulnerability identifier: #VU105509
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-1391
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Keycloak
Keycloak
Software vendor:
Keycloak
Keycloak
Description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper mapping of users to organizations based solely on email/username patterns. A remote attacker can trick an organization administrator into allowing user access based on naming pattern if, for example, self-registration is enabled and unrestricted.
Remediation
Install updates from vendor's website.