High severityNVD Advisory· Published Mar 5, 2026· Updated Mar 6, 2026
Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login
CVE-2026-3047
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.keycloak:keycloak-broker-samlMaven | <= 1.8.1.Final | — |
Affected products
3- Red Hat/Red Hat build of Keycloak 26.2.14v5cpe:/a:redhat:build_keycloak:26.2::el9
- Red Hat/Red Hat build of Keycloak 26.4.10v5cpe:/a:redhat:build_keycloak:26.4::el9
Patches
Vulnerability mechanics
References
9- access.redhat.com/errata/RHSA-2026:3925ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:3926ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:3947ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:3948ghsavendor-advisoryx_refsource_REDHATWEB
- github.com/advisories/GHSA-8cr3-vpxx-92cxghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-3047ghsaADVISORY
- access.redhat.com/security/cve/CVE-2026-3047ghsavdb-entryx_refsource_REDHATWEB
- bugzilla.redhat.com/show_bug.cgighsaissue-trackingx_refsource_REDHATWEB
- github.com/keycloak/keycloak/releases/tag/26.5.5ghsaWEB
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