CVE-2026-1190

Low · 3.1

CVSS

3.1

EPSS

0.4%

Published

Jan 26, 2026

CISA due date

—

The record

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.

Affected packages

Ecosystem	Package	Fixed
Maven	org.keycloak:keycloak-services	No fix
Chainguard	keycloak-26.5	26.5.3-r0
Chainguard	keycloak-26.5-iamguarded-compat	26.5.3-r0
Chainguard	keycloak-fips-26.5	26.5.3-r0
Chainguard	keycloak-fips-26.5-iamguarded-fips	26.5.3-r0
Wolfi	keycloak-26.5	26.5.3-r0
Wolfi	keycloak-26.5-iamguarded-compat	26.5.3-r0

Related vulnerabilities

GHSA-7g5x-9c4v-4w5r Keycloak REST Services has a WebAuthn Attestation Statement Verification Bypass Also affects org.keycloak:keycloak-services
CVE-2025-12150 A flaw was found in Keycloak’s WebAuthn registration component. Also affects org.keycloak:keycloak-services
GHSA-fjf4-6f34-w64q Keycloak: Missing Check on Disabled Client for Docker Registry Protocol Also affects org.keycloak:keycloak-services
CVE-2026-2733 A flaw was identified in the Docker v2 authentication endpoint of Keycloak, where tokens… Also affects org.keycloak:keycloak-services
GHSA-37gf-gmxv-74wv Keycloak fails to verify if an Identity Provider (IdP) is enabled before issuing tokens Also affects org.keycloak:keycloak-services
GHSA-hcvw-475w-8g7p Keycloak affected by improper invitation token validation Also affects org.keycloak:keycloak-services
GHSA-fm6w-rrp3-2x4w Keycloak Affected by Broken Access Control Vulnerability in the… Also affects org.keycloak:keycloak-services
CVE-2026-1486 A flaw was found in Keycloak. Also affects org.keycloak:keycloak-services