EUVD-2026-35058
GHSA-p5q4-94mg-325p
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
A flaw was found in Keycloak. A limited administrator can exploit an improper access control vulnerability in the POST /admin/realms/{realm}/partialImport endpoint. This allows them to bypass Fine-Grained Admin Permissions (FGAP) and escalate their privileges to a full realm administrator by importing users with realm-admin role mappings.
AnalysisAI
{realm}/partialImport endpoint to bypass Fine-Grained Admin Permissions (FGAP) and promote themselves to full realm administrator. The flaw is an improper authorization check (CWE-863) on imported users carrying realm-admin role mappings. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires (1) an authenticated account on the target Keycloak realm that already holds a Fine-Grained Admin Permission allowing it to call POST /admin/realms/{realm}/partialImport (typically a delegated/limited realm administrator with manage-users or manage-realm scope), (2) network reachability to the Keycloak admin REST API, and (3) a realm configuration in which FGAP is actually used to delegate partial admin rights - single-tenant deployments where only full realm-admins exist gain nothing from the bypass. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.2 with vector AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H is consistent with the description: network-reachable admin API, low complexity, but requires an already-authenticated high-privilege account (a delegated realm admin), which is what limits real-world risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A tenant in a shared Keycloak deployment is granted a delegated admin account with FGAP scoped to manage only their own users. The attacker authenticates to the admin console, sends a POST to /admin/realms/{realm}/partialImport with a JSON payload containing a new user whose realmRoles include realm-admin, and Keycloak imports the user without re-checking that the calling admin is authorized to assign that role - the attacker then logs in as the imported user and exercises full realm-admin control. … |
| Remediation | No vendor-released patch version was provided in the input, so treat fix status as patch availability to be confirmed via the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-11577 and Bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=2459993, and via the upstream tracker https://github.com/keycloak/keycloak/issues/9387 - apply the fixed build for your specific product (Red Hat Build of Keycloak, RH-SSO 7, JBoss EAP 8, EAP Expansion Pack, or Data Grid 8) as soon as it is published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all affected deployments, restrict network access to the /partialImport endpoint, and enable comprehensive audit logging. …
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