Org.keycloak/keycloak-services: jwt token cache exhaustion leading to denial of service (dos) in keycloak
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| Red Hat | Red Hat Build of Keycloak | unaffected | — | |||||||||
| Red Hat | Red Hat build of Keycloak 26.0 | affected |
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| Red Hat | Red Hat build of Keycloak 26.0 | affected |
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| Red Hat | Red Hat build of Keycloak 26.0 | affected |
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| Red Hat | Red Hat Single Sign-On 7 | affected | — |
No data.
| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Build of Keycloak | |||
| keycloak-services | cpe:/a:redhat:build_keycloak:26 | RHSA-2025:4336 | 2025-04-29T00:00:00Z |
| Red Hat build of Keycloak 26.0 | |||
| rhbk/keycloak-operator-bundle:26.0.11-2 | cpe:/a:redhat:build_keycloak:26.0::el9 | RHSA-2025:4335 | 2025-04-29T00:00:00Z |
| rhbk/keycloak-rhel9:26.0-12 | cpe:/a:redhat:build_keycloak:26.0::el9 | RHSA-2025:4335 | 2025-04-29T00:00:00Z |
| rhbk/keycloak-rhel9-operator:26.0-13 | cpe:/a:redhat:build_keycloak:26.0::el9 | RHSA-2025:4335 | 2025-04-29T00:00:00Z |
No data available yet.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-8064 | 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. |
Github GHSA |
GHSA-2935-2wfm-hhpv | Keycloak Denial of Service (DoS) Vulnerability via JWT Token Cache |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.703% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:/a:redhat:build_keycloak:26.0 |
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| References |
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| CPEs | cpe:/a:redhat:build_keycloak:26 | |
| References |
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| Type | Values Removed | Values Added |
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| CPEs | cpe:/a:redhat:build_keycloak:26.0::el9 | |
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| Metrics |
ssvc
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threat_severity
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threat_severity
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| 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. | |
| Title | Org.keycloak/keycloak-services: jwt token cache exhaustion leading to denial of service (dos) in keycloak | |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| Weaknesses | CWE-770 | |
| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| References |
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| Metrics |
cvssV3_1
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