CVE-2026-1190

LowCVSS 3.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 3.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-112

Affected software

No affected versions have been published.

Timeline

Published: Jan 26, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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