{"id":"BIT-keycloak-2026-18214","summary":"Keycloak-services: keycloak-services: google external access-token exchange bypasses hosted-domain restriction","details":"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.","aliases":["CVE-2026-18214"],"modified":"2026-09-17T14:45:07.864294949Z","published":"2026-08-31T14:37:14.664Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:-:*:*:*","cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-18214"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2508308"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18214"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:68277"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:68278"}],"affected":[{"package":{"name":"keycloak","ecosystem":"Bitnami","purl":"pkg:bitnami/keycloak"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"26.7.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-18214.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}