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Security Advisories

CVE-2025-2559

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-2559

Severity

4.9

Medium

CVSS V3

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Summary

Org.keycloak/keycloak-services: jwt token cache exhaustion leading to denial of service (dos) in keycloak

Description

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.

References

Affected packages


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