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.
History

Mon, 26 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 26 Jan 2026 19:45:00 +0000

Type Values Removed Values Added
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
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
Vendors & Products Redhat
Redhat build Keycloak
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
Redhat red Hat Single Sign On
References

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
Metrics threat_severity

None

cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'}

threat_severity

Low


cve-icon MITRE

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

cve-icon Vulnrichment

Updated: 2026-01-26T20:57:47.531Z

cve-icon NVD

Status : Received

Published: 2026-01-26T20:16:09.813

Modified: 2026-01-26T20:16:09.813

Link: CVE-2026-1190

cve-icon Redhat

Severity : Low

Publid Date: 2026-01-19T08:08:00Z

Links: CVE-2026-1190 - Bugzilla