A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.
Metrics
Affected Vendors & Products
References
History
Mon, 26 Jan 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Mon, 26 Jan 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | No description is available for this CVE. | A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption. |
| Title | org.keycloak/keycloak-services: Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData | Org.keycloak/keycloak-services: keycloak saml brokering: response delay due to unchecked notonorafter in subjectconfirmationdata |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat jboss Enterprise Application Platform Redhat jbosseapxp Redhat red Hat Single Sign On |
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| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:jboss_enterprise_application_platform:8 cpe:/a:redhat:jbosseapxp cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat build Keycloak Redhat jboss Enterprise Application Platform Redhat jbosseapxp Redhat red Hat Single Sign On |
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| References |
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Tue, 20 Jan 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | No description is available for this CVE. | |
| Title | org.keycloak/keycloak-services: Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData | |
| Weaknesses | CWE-112 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-01-26T19:36:53.857Z
Updated: 2026-01-26T20:57:50.911Z
Reserved: 2026-01-19T13:44:11.164Z
Link: CVE-2026-1190
Updated: 2026-01-26T20:57:47.531Z
Status : Received
Published: 2026-01-26T20:16:09.813
Modified: 2026-01-26T20:16:09.813
Link: CVE-2026-1190