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CVE-2026-1190— Org.keycloak/keycloak-services: keycloak saml brokering: response delay due to unchecked notonorafter in subjectconfirmationdata

CVSS 3.1 · Low EPSS 0.02% · P5
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I. Basic Information for CVE-2026-1190

Vulnerability Information
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Vulnerability Title
Org.keycloak/keycloak-services: keycloak saml brokering: response delay due to unchecked notonorafter in subjectconfirmationdata
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
XML验证缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keycloak是Keycloak开源的一种开源身份和访问管理解决方案。 Keycloak存在安全漏洞，该漏洞源于未检查SubjectConfirmationData中的NotOnOrAfter，可能导致响应延迟。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat build of Keycloak 26.4 26.4.10-1 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat build of Keycloak 26.4 26.4-12 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat build of Keycloak 26.4 26.4-12 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat build of Keycloak 26.4.10-cpe:/a:redhat:build_keycloak:26.4::el9
Red HatRed Hat JBoss Enterprise Application Platform 8-cpe:/a:redhat:jboss_enterprise_application_platform:8
Red HatRed Hat JBoss Enterprise Application Platform Expansion Pack-cpe:/a:redhat:jbosseapxp
Red HatRed Hat Single Sign-On 7-cpe:/a:redhat:red_hat_single_sign_on:7

II. Public POCs for CVE-2026-1190

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III. Intelligence Information for CVE-2026-1190

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Same Patch Batch · Red Hat · 2026-01-26 · 6 CVEs total

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CVE-2025-149694.3 MEDIUMHibernate-reactive-core: hibernate reactive: denial of service due to connection leak on h
CVE-2025-98204.0 MEDIUMGnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function
CVE-2025-9615Networkmanager: networkmanager file access

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 26.4
Same vendor: Red Hat
Same weakness: CWE-112

V. Comments for CVE-2026-1190

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