GHSA-8cr3-vpxx-92cx
Keycloak SAML Broken has Authentication Bypass by Primary Weakness
At a glance
- Published
- Updated
- CVE
- CVE-2026-3047
- Aliases
- BIT-keycloak-2026-3047
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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. A fix is available at https://github.com/keycloak/keycloak/releases/tag/26.5.5.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.keycloak:keycloak-broker-saml | introduced 0, last affected 1.8.1.Final |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-3047 ADVISORY
- https://access.redhat.com/errata/RHSA-2026:3925 WEB
- https://access.redhat.com/errata/RHSA-2026:3926 WEB
- https://access.redhat.com/errata/RHSA-2026:3947 WEB
- https://access.redhat.com/errata/RHSA-2026:3948 WEB
- https://access.redhat.com/security/cve/CVE-2026-3047 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2441966 WEB
- https://github.com/keycloak/keycloak PACKAGE
- https://github.com/keycloak/keycloak/releases/tag/26.5.5 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |