CVE-2026-3047— Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login
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I. Basic Information for CVE-2026-3047
Vulnerability Information
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Vulnerability Title
Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用基本弱点进行的认证绕过
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，该漏洞源于已禁用的SAML客户端仍可完成登录过程，可能导致远程攻击者未经重新认证获得对其他启用客户端的未授权访问。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2.14-1 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2-16 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2-16 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2.14 | - | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4.10-1 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-12 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-12 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4.10 | - | cpe:/a:redhat:build_keycloak:26.4::el9 |
II. Public POCs for CVE-2026-3047
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: Red Hat build of Keycloak 26.2
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Same weakness: CWE-305
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V. Comments for CVE-2026-3047
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