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CVE-2026-1190

LOW

3.1

Description

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.

CVE Details

CVSS v3.1 Score3.1

SeverityLOW

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionREQUIRED

Published1/26/2026

Last Modified3/5/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-112

References

https://access.redhat.com/errata/RHSA-2026:3947(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2026:3948(secalert@redhat.com)

https://access.redhat.com/security/cve/CVE-2026-1190(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2430835(secalert@redhat.com)

IOC Correlations

No correlations recorded

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