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7.5 High

CVE-2025-11419 A flaw was found in Keycloak

Description

A flaw was found in Keycloak. This vulnerability allows an unauthenticated remote attacker to cause a denial of service (DoS) by repeatedly initiating TLS 1.2 client-initiated renegotiation requests to exhaust server CPU resources, making the service unavailable.

Affected products and versions

Product Affected versions Fixed in
Red Hat build of Keycloak 26.0 26.0 earliest → < 26.0-21 26.0-21
Red Hat build of Keycloak 26.0.16 Versions not published
Red Hat build of Keycloak 26.2 26.2 earliest → < 26.2-11 26.2-11
Red Hat build of Keycloak 26.2.10 Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Red Hat build of Keycloak 26.0

The 16 CVEs of Red Hat build of Keycloak 26.0 →
CVE-2025-10044 A flaw was found in Keycloak 4.3 Medium CVE-2025-9162 A flaw was found in org.keycloak/keycloak-model-storage-service 4.9 Medium CVE-2025-8419 A vulnerability was found in Keycloak-services 5.3 Medium CVE-2025-7365 A flaw was found in Keycloak 7.1 High
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