CVE-2026-1180
Last modified
CVE-2026-1180 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
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/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
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Scan your code nowSource: NVD / NIST