CVE-2026-3047

Estado: ModificadaAlta (8.8)—

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 to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.89%
Percentil entre todas las CVEs puntuadas: 58
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1078.004 Cloud Accountsstealth · persistence · privilege escalation · initial access80 %
Impacto secundarioT1550.003 Pass the Ticketlateral movement75 %

AV:N/PR:L requiere acceso remoto con privilegios (T1210). El atacante obtiene sesión SSO no autorizada (T1078.004: account creation) y puede suplantarse en otros clientes sin reautenticación (T1550.003: use alternate authentication materials).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account Management Active Directory Configuration User Account Management Password Policies Vulnerability Scanning User Training

Tecnologías afectadas (2)

Redhat — Build OF Keycloak Redhat — Keycloak

CWE

CWE-305
CWE-305

Referencias

JSON original (NVD)

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