CVE-2025-2559 – org.keycloak:keycloak-services

Package

Manager: maven
Name: org.keycloak:keycloak-services
Vulnerable Version: >=0 <=26.1.4

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00322 pctl0.54628

Details

Keycloak Denial of Service (DoS) Vulnerability via JWT Token Cache A flaw was found in Keycloak. When the configuration uses JWT tokens for authentication, the tokens are cached until expiration. 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 an OutOfMemoryError. This issue could result in a denial of service condition, preventing legitimate users from accessing the system.

Metadata

Created: 2025-03-25T09:32:07Z
Modified: 2025-04-30T03:30:31Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-2935-2wfm-hhpv/GHSA-2935-2wfm-hhpv.json
CWE IDs: ["CWE-770"]
Alternative ID: GHSA-2935-2wfm-hhpv
Finding: F002
Auto approve: 1