CVE-2026-4874

LOW

3.1

Descripcion

A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery (SSRF) by manipulating the `client_session_host` parameter during refresh token requests. This occurs when a Keycloak client is configured to use the `backchannel.logout.url` with the `application.session.host` placeholder. Successful exploitation allows the attacker to make HTTP requests from the Keycloak server’s network context, potentially probing internal networks or internal APIs, leading to information disclosure.

Detalles CVE

Puntuacion CVSS v3.13.1

SeveridadLOW

Vector CVSSCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Vector de ataqueNETWORK

ComplejidadHIGH

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado3/26/2026

Ultima modificacion4/1/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

redhat:build_of_keycloakredhat:jboss_enterprise_application_platformredhat:jboss_enterprise_application_platform_expansion_packredhat:single_sign-on

Debilidades (CWE)

CWE-918

Referencias

https://access.redhat.com/security/cve/CVE-2026-4874(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2451611(secalert@redhat.com)

Correlaciones IOC

Sin correlaciones registradas

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