CVE-2026-4874

LOW

3.1

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung3.1

SchweregradLOW

CVSS VektorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

AngriffsvektorNETWORK

KomplexitatHIGH

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht3/26/2026

Zuletzt geandert4/1/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

redhat:build_of_keycloakredhat:jboss_enterprise_application_platformredhat:jboss_enterprise_application_platform_expansion_packredhat:single_sign-on

Schwachen (CWE)

CWE-918

Referenzen

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

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

IOC Korrelationen

Keine Korrelationen erfasst

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