CVE-2026-1180 Details
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.
A blind server-side request forgery (SSRF) vulnerability has been identified in Keycloak's OpenID Connect Dynamic Client Registration feature, specifically when clients authenticate using private_key_jwt. The vulnerability arises because Keycloak does not validate the jwks_uri parameter provided by clients during registration. This lack of validation allows attackers to manipulate the Keycloak server into making HTTP requests to internal or restricted network resources. Consequently, attackers could probe internal services and access cloud metadata endpoints, leading to potential information disclosure and reconnaissance risks.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jan 20, 2026CISA-ADP
Assessed Jan 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:6477 | [email protected] | |
| https://access.redhat.com/errata/RHSA-2026:6478 | [email protected] | |
| https://access.redhat.com/security/cve/CVE-2026-1180 | [email protected] | AdvisoryVendor |
| https://bugzilla.redhat.com/show_bug.cgi?id=2430781 | [email protected] | Issue TrackingTechnical DescriptionVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Red Hat Keycloak | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 2, 2026 | CVE Modified | [email protected] |
| Jan 20, 2026 | New CVE Received | [email protected] |