Riskcovery

CVE-2026-1180

Org.keycloak.protocol.oidc: blind server-side request forgery (ssrf) in keycloak oidc dynamic client registration via jwks_uri

State
Published
Severity
5.8 Medium
Published
Jan 20, 2026
Updated
Apr 2, 2026
Reserved
Jan 19, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.8 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:Nredhat

Weaknesses

  • CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

ProductVersions
Red Hat build of Keycloak 26.4Red Hat
  • 26.4.11-1 and laterNot affected
Red Hat build of Keycloak 26.4Red Hat
  • 26.4-14 and laterNot affected
Red Hat build of Keycloak 26.4Red Hat
  • 26.4-14 and laterNot affected
Red Hat build of Keycloak 26.4.11Red Hat
    Red Hat Build of KeycloakRed Hat
      Red Hat Build of KeycloakRed Hat
        Red Hat JBoss Enterprise Application Platform 8Red Hat
          Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat
            Red Hat Single Sign-On 7Red Hat

              References

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