Medium [CVE-2026-19729] Keycloak-services: keycloak-services: incomplete fix for arbitrary filesystem path probing via keystore parameters
This medium-severity Red Hat Linux advisory covers CVE-2026-19729 affecting Red Hat Build of Keycloak.
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Summary
A flaw was found in the key provider component of the keycloak-services library, which is the core engine for the Red Hat Build of Keycloak. The issue occurs because a previous fix for path probing was incomplete, allowing a realm administrator to still submit arbitrary filesystem paths as keystore parameters.
This can be used to determine the existence and readability of files on the server, potentially exposing sensitive system information. The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires high-level administrative privileges (manage-realm role).
Successful exploitation allows an attacker to probe arbitrary filesystem paths to determine the existence and readability of files on the host system. The vulnerabilitys root cause is an incomplete input validation fix in the key provider component of keycloak-services.
Weakness: CWE-22. Affected Red Hat products: Red Hat Build of Keycloak.
Red Hat lists Red Hat Single Sign-On 7 as not affected. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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