CVE-2025-2559
CVSS 3.1 Score 4.9 of 10 (medium)
Details
Published Mar 25, 2025
Updated: Mar 27, 2025
CWE ID 770
Summary
CVE-2025-2559 is a vulnerability affecting Keycloak's JWT token authentication feature. If the configuration uses JWT tokens and a client sets an excessively long expiration time, such as 24 or 48 hours, the token cache can grow indefinitely. This can lead to an OutOfMemoryError and result in a denial of service condition, rendering the system inaccessible to legitimate users.
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