BIT-KEYCLOAK-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 SSO session. This allows a remote attacker...

BIT-KEYCLOAK-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 logins even when the SAML Identity...

BIT-KEYCLOAK-2026-16442 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction

A flaw was found in the SAML broker component of Keycloak, which is used to manage identity federation and user authentication. The issue occurs because the IdP-initiated Single Sign-On endpoint fails to check if a provider is restricted to account linking only. This allows an attacker with contr...

CVE-2026-18967

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused asserti...

CVE-2026-18967

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused asserti...

CVE-2026-18967

The CVE affects Keycloak’s SAML broker component when configured as an IdP-Initiated flow. The vulnerability arises because OneTimeUse in SAML assertions is not enforced, allowing an attacker who captures a valid, unused assertion to replay it and potentially hijack a user’s session, granting una...

CVE-2026-18967 Keycloak-services: keycloak-services: saml onetimeuse assertion replay in idp-initiated broker flow

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused asserti...

CVE-2026-18967

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused asserti...

CVE-2026-18967: Authentication Bypass by Capture-replay

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused asserti...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.5 Security Update

New Red Hat build of Keycloak 26.6.5 packages are available from the Customer Portal Red Hat build of Keycloak 26.6.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes...

CVE-2026-16442 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction

A flaw was found in the SAML broker component of Keycloak, which is used to manage identity federation and user authentication. The issue occurs because the IdP-initiated Single Sign-On endpoint fails to check if a provider is restricted to account linking only. This allows an attacker with contr...

EUVD-2026-53395

A flaw was found in the SAML broker component of Keycloak, which is used to manage identity federation and user authentication. The issue occurs because the IdP-initiated Single Sign-On endpoint fails to check if a provider is restricted to account linking only. This allows an attacker with contr...

CVE-2026-16442

A flaw was found in the SAML broker component of Keycloak, which is used to manage identity federation and user authentication. The issue occurs because the IdP-initiated Single Sign-On endpoint fails to check if a provider is restricted to account linking only. This allows an attacker with contr...

PT-2026-68183

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the SAML broker component used for identity federation and user authentication. The IdP-initiated Single Sign-On endpoint fails to verify if a provider is restricted to...

Replay Attack

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Replay Attack through IdP-initiated broker logins in the services/src/main/java/org/keycloak/broker/saml...

GHSA-794G-X443-36F7 Keycloak: Unauthorized access via improper validation of encrypted SAML assertions

Keycloak's 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 crafting a malicious SAML response, injecting an encrypted assertion for an arbitrary principal, leading...

PT-2026-55372

Keycloak's 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 crafting a malicious SAML response, injecting an encrypted assertion for an arbitrary principal, leading...

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 crafting a malicious SAML response. Thi...

CVE-2026-2092: Improper Validation of Specified Type of Input

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 crafting a malicious SAML response. Thi...

EUVD-2026-9864

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...