CVE-2026-9083: Keycloak: keycloak: information disclosure through arbitrary filesystem path probing

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-25 · updated 2026-07-01
Weakness: CWE-22

Description

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.

Affected products

Red Hat build of Keycloak 26.4: from 26.4 before 26.4.13; from 26.6 before 26.6.4 — fixed in 26.4.13, 26.6.4

How to fix

Upgrade to a fixed version: Red Hat build of Keycloak 26.4 26.4.13, 26.6.4. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-9083 or the next vulnerability affects your stack