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 Provider is disabled, leading to unauthorized authentication.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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 Provider is
    disabled, leading to unauthorized authentication. (CVE-2026-2603)

ID	Name	Product	Family	Type	Severity
463755	Echo: keycloak-25: security update to 25.0.6+e1org.keycloak:keycloak-server-spi-private: security update to 26.5.5	Tenable Cloud Security	Echo Local Security Checks	Local	high
463755	Echo: keycloak-25: security update to 25.0.6+e1org.keycloak:keycloak-server-spi-private: security update to 26.5.5	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
442360	SCA: security update for org.keycloak:keycloak-server-spi-private, org.keycloak:keycloak-services (GHSA-x4p7-7chp-64hq)	Tenable Cloud Security	SCA Checks	Local	high
442360	SCA: security update for org.keycloak:keycloak-server-spi-private, org.keycloak:keycloak-services (GHSA-x4p7-7chp-64hq)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-2603

high

Tenable Plugins

high

high

high

high