CVE-2026-3047

HIGH 8.8

Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-305
Vendor	red hat
Product	red hat build of keycloak 26.2
Published	Mar 5, 2026
Last Updated	Mar 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Red Hat / Red Hat build of Keycloak 26.2

All versions affected

Red Hat / Red Hat build of Keycloak 26.2

All versions affected

Red Hat / Red Hat build of Keycloak 26.2

All versions affected

Red Hat / Red Hat build of Keycloak 26.2.14

All versions affected

Red Hat / Red Hat build of Keycloak 26.4

All versions affected

Red Hat / Red Hat build of Keycloak 26.4

All versions affected

Red Hat / Red Hat build of Keycloak 26.4

All versions affected

Red Hat / Red Hat build of Keycloak 26.4.10

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3925 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3926 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3947 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3948 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-3047 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2441966