Information Exposure Affecting org.keycloak:keycloak-server-spi-private package, versions [0,]
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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Test your applications- Snyk IDSNYK-JAVA-ORGKEYCLOAK-18751621
- published13 Aug 2026
- disclosed15 Jul 2026
- creditUnknown
Introduced: 15 Jul 2026
CVE-2026-16104 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
org.keycloak:keycloak-server-spi-private is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Information Exposure through the AuthenticationManagementResource in services/src/main/java/org/keycloak/services/resources/admin/AuthenticationManagementResource.java. An attacker can retrieve raw authenticator configuration secrets by requesting authentication config data through the admin API as a user with view-only permissions. The vulnerable GET paths return ModelToRepresentation.toRepresentation(config) without masking sensitive entries, so values such as reCAPTCHA secret keys are exposed in the response and can also appear in administrative logs. This leaks third-party service credentials to unauthorized administrators and can expose secrets used by the realm’s authentication flows.
Notes
- The leak is limited to the admin GET endpoints that return authenticator-config representations, so only deployments where administrators can view authentication configs through the admin API are exposed.
- The exposed values are those stored in authenticator config metadata, including provider-defined secrets and legacy/unknown keys that are not recognized as non-secret by the provider registry.