A flaw was found in Keycloak. A realm administrator with the "manage-realm" role can exploit this vulnerability by submitting an arbitrary filesystem path as a keystore parameter when creating a key provider component. This allows the administrator to probe arbitrary filesystem paths, determining which files exist and are readable by the Keycloak process. This information disclosure could be used to identify high-value targets for follow-on attacks.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A flaw was found in Keycloak. A realm administrator with the "manage-realm" role can exploit this
    vulnerability by submitting an arbitrary filesystem path as a keystore parameter when creating a key
    provider component. This allows the administrator to probe arbitrary filesystem paths, determining which
    files exist and are readable by the Keycloak process. This information disclosure could be used to
    identify high-value targets for follow-on attacks. (CVE-2026-9083)

The version of Keycloak installed on the remote host is prior to 26.6.4. It is, therefore, affected by multiple vulnerabilities, including the following:

  - A user with group-admin privileges can escalate to realm-admin, gaining full administrative control     over the realm. (CVE-2026-9099)

  - An authentication bypass exists via JWT algorithm confusion, allowing unauthorized access.
    (CVE-2026-11800)

  - Any authenticated user can bypass all authorization policies, including role, scope, and UMA     permission checks, by including the configured access-denied page path within a request URL, gaining     unauthorized access to protected resources. (CVE-2026-9800)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
477917	SCA: security update for org.keycloak:keycloak-services (GHSA-9jrw-8xf7-xqhq)	Tenable Cloud Security	SCA Checks	Local	medium
477917	SCA: security update for org.keycloak:keycloak-services (GHSA-9jrw-8xf7-xqhq)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
324966	Keycloak < 26.6.4 Multiple Vulnerabilities	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-9083

medium

Tenable Plugins

medium

medium

high