#VU108092 Resource management error in Keycloak - CVE-2025-2559
Published: April 30, 2025
Vulnerability identifier: #VU108092
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-2559
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Keycloak
Keycloak
Software vendor:
Keycloak
Keycloak
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application when caching JWT tokens. If a client uses JWT tokens with an excessively long expiration time, for example, 24 or 48 hours, the cache can grow indefinitely leading to denial of service.
Remediation
Install updates from vendor's website.