Answer in brief
CVE-2026-2366 records a Low severity (CVSS 3.1) vulnerability in Keycloak vulnerable to authorization bypass via the Admin API. The current sources do not mark it as known exploited. The current feed maps org.keycloak:keycloak-js-admin-client (maven), @keycloak/keycloak-admin-client (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps org.keycloak:keycloak-js-admin-client (maven), @keycloak/keycloak-admin-client (npm). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| org.keycloak:keycloak-js-admin-clientmaven | >=0 | Not reported |
| @keycloak/keycloak-admin-clientnpm | >=0 | Not reported |
Published upstream
Mar 12, 2026
Evidence: source:nvd:source_dates:source-dates:recordSource modified
Aug 26, 2026
Evidence: source:nvd:source_dates:source-dates:recordFirst seen by HOL
Aug 19, 2026
A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.
Quoted source text, attributed separately from HOL analysis.