CVE-2026-3009

Estado: ModificadaAlta (8.1)—

A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the administrative restriction. This undermines access control enforcement and may allow unauthorized authentication through a disabled external provider.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.49%
Percentil entre todas las CVEs puntuadas: 40
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.

ExplotaciónT1203 Exploitation for Client Executionexecution75 %
Impacto principalT1078 Valid Accountsstealth · persistence · privilege escalation · initial access80 %
Impacto secundarioT1556 Modify Authentication Processdefense impairment · persistence · credential access65 %

UI:R requiere interacción del usuario (reutilización de solicitud de login). T1078 por acceso de cuenta no autorizado. T1556 por manipulación de mecanismo de autenticación (IdP deshabilitado).

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

User Account Management Privileged Account Management Password Policies Multi-factor Authentication Application Developer Guidance Active Directory Configuration

Tecnologías afectadas (4)

Redhat — Build OF Keycloak Redhat — Jboss Enterprise Application Platform Redhat — Jboss Enterprise Application Platform Expansion Pack Redhat — Single Sign-on

CWE

CWE-863
CWE-863
CWE-863

Referencias

JSON original (NVD)

Mostrar

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