Authorization Bypass Through User-Controlled Key Affecting org.keycloak:keycloak-services package, versions [0,26.5.6)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JAVA-ORGKEYCLOAK-15279220
- published13 Feb 2026
- disclosed11 Feb 2026
- creditReynaldo Immanuel, Joy Gilbert
Introduced: 11 Feb 2026
CVE-2026-2366 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.5.6 or higher.
Overview
org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the Admin API when the Organizations feature is enabled. An authenticated attacker can enumerate the organization memberships of any other user if their unique identifier (UUID) is known.
Note:
This is only exploitable if the Organizations feature is enabled (which is the default in recent versions), the attacker possesses a valid access token for the realm and the attacker knows the UUID of the victim user.