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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

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


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

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 : Awaiting Analysis

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

Modified: 2026-01-27T14:59:34.073

Link: CVE-2026-1190

cve-icon Redhat

Severity : Low

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

Links: CVE-2026-1190 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses