Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login (Red Hat Red Hat build of Keycloak 26.2)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.55 % · percentile 46 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-305 — Authentication Bypass by Primary Weakness
References
- 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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-8cr3-vpxx-92cx — Keycloak SAML Broken has Authentication Bypass by Primary Weakness
European references
- ENISA EUVD · EUVD-2026-9864
- GCVE · GCVE-0-2026-3047
Affected configurations (NVD CPE)
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:*:*:*:*cpe:2.3:a:redhat:build_of_keycloak:26.2.14:*:*:*:*:*:*:*cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:*:*:*:*cpe:2.3:a:redhat:build_of_keycloak:26.4.10:*:*:*:*:*:*:*cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat build of Keycloak 26.2 | unaffected 26.2.14-1 < * |
| Red Hat · Red Hat build of Keycloak 26.2 | unaffected 26.2-16 < * |
| Red Hat · Red Hat build of Keycloak 26.2 | unaffected 26.2-16 < * |
| Red Hat · Red Hat build of Keycloak 26.2.14 | |
| Red Hat · Red Hat build of Keycloak 26.4 | unaffected 26.4.10-1 < * |
| Red Hat · Red Hat build of Keycloak 26.4 | unaffected 26.4-12 < * |
| Red Hat · Red Hat build of Keycloak 26.4 | unaffected 26.4-12 < * |
| Red Hat · Red Hat build of Keycloak 26.4.10 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |