CVE-2026-1180

MediumCVSS 5.8/10Last modified Jun 17, 2026

Description

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.

Metrics

CVSS 3.1 5.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Weakness enumeration

CWE-918

Affected software

No affected versions have been published.

Timeline

Published: Jan 20, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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