CVE-2026-2603: falha de alta gravidade em Red Hat build of Keycloak 26.2
Keycloak: keycloak: unauthorized authentication via disabled saml identity provider
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.1epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Produtos afetados
Red Hat · Red Hat build of Keycloak 26.2Red Hat · Red Hat build of Keycloak 26.2.14Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.10CVEs relacionadas — Red Hat build of Keycloak 26.2
No mesmo produto, das mais perigosas para as menos.
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Referências
https://access.redhat.com/errata/RHSA-2026:3925https://access.redhat.com/errata/RHSA-2026:3926https://access.redhat.com/errata/RHSA-2026:3947https://access.redhat.com/errata/RHSA-2026:3948https://access.redhat.com/security/cve/CVE-2026-2603https://bugzilla.redhat.com/show_bug.cgi?id=2440300https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2603.json