PT-2026-66727 · Red Hat · Red Hat Build Of Keycloak+3

CVE-2026-18214 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v3.1

6.8

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Keycloak allows users to log in using Google accounts and can be configured to only allow users from specific Google Workspace domains. A flaw was found where the token exchange feature, which allows swapping a Google token for a Keycloak token, does not check these domain restrictions. This means an attacker with a valid Google account from a different domain could bypass the security check and gain access to the Keycloak realm.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-18214

Affected Products

Red Hat Build Of Keycloak

Red Hat Data Grid 8

Red Hat Jboss Enterprise Application Platform Expansion Pack

Red Hat Single Sign-On 7

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-18214 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2508308 · Note
• https://access.redhat.com/security/cve/CVE-2026-18214 · Note