Insufficient Granularity of Access Control Affecting org.keycloak:keycloak-services package, versions [7.0.0,26.6.2)
Threat Intelligence
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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- published24 May 2026
- disclosed19 May 2026
- creditUnknown
Introduced: 19 May 2026
CVE-2026-37981 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.6.2 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 Insufficient Granularity of Access Control via the user handler in the resource account service. An attacker can retrieve another user’s profile details by sending a GET request with an arbitrary value parameter for a resource they can access. The endpoint returns the target user’s identifier, username, first name, last name, and email without verifying that the requester owns the user record or has a permission request for that resource, exposing account data to unauthorized callers.
Note: While the fix was back-ported to version 26.4.12, this version has not been published to Maven Central