CVE-2026-4874

LOW

3.1

Description

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.

Details CVE

Score CVSS v3.13.1

SeveriteLOW

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

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisLOW

Interaction utilisateurNONE

Publie3/26/2026

Derniere modification4/1/2026

Sourcenvd

Observations honeypot0

Produits affectes

redhat:build_of_keycloakredhat:jboss_enterprise_application_platformredhat:jboss_enterprise_application_platform_expansion_packredhat:single_sign-on

Faiblesses (CWE)

CWE-918

References

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

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

Correlations IOC

Aucune correlation enregistree

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