high8.8
CVE-2026-3047
Keycloak SAML Broken has Authentication Bypass by Primary Weakness
Impact
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. A fix is available at https://github.com/keycloak/keycloak/releases/tag/26.5.5.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-broker-saml | <= 1.8.1.Final | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions Versions 26.2, 26.2.14, 26.4, 26.4.10 |
| Redhat | Keycloak | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://access.redhat.com/errata/RHSA-2026:3925
- https://access.redhat.com/errata/RHSA-2026:3926
- https://access.redhat.com/errata/RHSA-2026:3947
- https://access.redhat.com/errata/RHSA-2026:3948
- https://access.redhat.com/security/cve/CVE-2026-3047
- https://bugzilla.redhat.com/show_bug.cgi?id=2441966
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3047.json
- https://github.com/advisories/GHSA-8cr3-vpxx-92cx
- https://nvd.nist.gov/vuln/detail/CVE-2026-3047
- https://github.com/keycloak/keycloak/releases/tag/26.5.5