CVE-2026-1180
Medium · 5.8CVSS
5.8
EPSS
0.4%
Published
Jan 20, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Maven | org.keycloak:keycloak-adapter-core | 0 | No fix |
Related vulnerabilities
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