CVE-2026-3047
Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login
- State
- Published
- Severity
- 8.8 High
- Published
- Mar 5, 2026
- Updated
- Jul 15, 2026
- Reserved
- Feb 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-305 Authentication Bypass by Primary Weakness
Affected Products
| Product | Versions |
|---|---|
Red Hat build of Keycloak 26.2Red Hat |
|
Red Hat build of Keycloak 26.2Red Hat |
|
Red Hat build of Keycloak 26.2Red Hat |
|
Red Hat build of Keycloak 26.2.14Red Hat | |
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4.10Red Hat |
References
- RHSA-2026:3925vendor-advisory
- RHSA-2026:3926vendor-advisory
- RHSA-2026:3947vendor-advisory
- RHSA-2026:3948vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-3047vdb-entry
- RHBZ#2441966issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3047.json
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