High WID-SEC-2026-0622 4 CVEs

Keycloak: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen

Published Mar 5, 2026 · Updated Mar 17, 2026 · Revision 2 · de-DE

Platform: Linux

Summary

Ein Angreifer kann mehrere Schwachstellen in Keycloak ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

Product

Keycloak ermöglicht Single Sign-On mit Identity and Access Management für moderne Anwendungen und Dienste.

Vulnerabilities 4

High 8.8

CVE-2026-3047

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

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 …

Red Hat Red Hat build of Keycloak 26.4 Red Hat build of Keycloak 26.2 Red Hat build of Keycloak 26.4.10 Maven

Mar 5, 2026
High 8.1

CVE-2026-2603

Keycloak: keycloak: unauthorized authentication via disabled saml identity provider

A flaw was found in Keycloak. A remote attacker could bypass security controls by sending a valid SAML response from an external Identity Provider (IdP) to the Keycloak SAML endpoint for IdP-initiated broker logins. This allows the attacker to complete broker…

Red Hat Red Hat build of Keycloak 26.4 Red Hat build of Keycloak 26.2 Red Hat build of Keycloak 26.4.10 Wolfi Maven

Mar 18, 2026
High 8.1

CVE-2026-3009

Org.keycloak/keycloak-services: improper enforcement of disabled identity provider in identitybrokerservice (authentication bypass)

A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously ge…

Red Hat Red Hat Single Sign-On 7 Red Hat JBoss Enterprise Application Platform Expansion Pack Red Hat build of Keycloak 26.4 Wolfi Maven

Mar 5, 2026
High 7.7

CVE-2026-2092

Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by…

Red Hat Red Hat build of Keycloak 26.4 RHEL-8 based Middleware Containers Red Hat Single Sign-On 7.6 for RHEL 8 Wolfi Maven

Mar 18, 2026

Revision history

2026-03-17 #2
Referenz(en) aufgenommen: EUVD-2026-12688
2026-03-05 #1
Initiale Fassung

References

Keycloak Release Notes vom 2026-03-05
https://www.keycloak.org/2026/03/keycloak-2655-released
Red Hat Security Advisory vom 2026-03-05
https://access.redhat.com/errata/RHSA-2026:3926