CVE-2026-17048: Keycloak-services: keycloak-services: vault-resolved rotated client secrets leaked via admin rest api

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-24 · updated 2026-08-19
Weakness: CWE-200

Description

A flaw was found in the Keycloak Admin REST API, which is used to manage security realms and clients. The issue occurs when the system processes requests for rotated client secrets that are stored in a secure vault. Due to improper boundary enforcement, a delegated administrator with view-only permissions can retrieve the actual resolved secret instead of the vault placeholder, leading to the exposure of sensitive credentials.

Affected products

Red Hat build of Keycloak 26.4: all versions

References

https://access.redhat.com/errata/RHSA-2026:56523
https://access.redhat.com/errata/RHSA-2026:56524
https://access.redhat.com/security/cve/CVE-2026-17048
https://bugzilla.redhat.com/show_bug.cgi?id=2506743

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