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CVE-2026-2603
HIGH8.1
Descricao
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.
Detalhes CVE
Pontuacao CVSS v3.18.1
SeveridadeHIGH
Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Vetor de ataqueNETWORK
ComplexidadeLOW
Privilegios necessariosLOW
Interacao do usuarioNONE
Publicado3/18/2026
Ultima modificacao3/18/2026
Fontenvd
Avistamentos honeypot0
Fraquezas (CWE)
CWE-306
Referencias
https://access.redhat.com/errata/RHSA-2026:3925(secalert@redhat.com)
https://access.redhat.com/errata/RHSA-2026:3926(secalert@redhat.com)
https://access.redhat.com/errata/RHSA-2026:3947(secalert@redhat.com)
https://access.redhat.com/errata/RHSA-2026:3948(secalert@redhat.com)
https://access.redhat.com/security/cve/CVE-2026-2603(secalert@redhat.com)
https://bugzilla.redhat.com/show_bug.cgi?id=2440300(secalert@redhat.com)
https://bugzilla.redhat.com/show_bug.cgi?id=2440300(134c704f-9b21-4f2e-91b3-4a467353bcc0)
Correlacoes IOC
Sem correlacoes registradas
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