{"schema":"threatline.record/2","record":{"id":"CVE-2026-109082","aliases":[],"summary":"Keycloak-services: keycloak-services: ciba confidential-only contract not enforced for public clients","details":"A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify that a client is authorized to use the CIBA flow, allowing public clients to bypass security requirements. An attacker could use this flaw to trick a user into approving a login request, eventually gaining full access to the users account without needing a client secret.","categories":["Identity & access"],"product":"Red Hat Build of Keycloak","vendor":"Red Hat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109082","source_modified_at":"2026-10-15T15:16:24.543Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Red Hat Build of Keycloak","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109082","source_modified_at":"2026-10-15T15:16:24.543Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Red Hat Build of Keycloak","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109082","source_modified_at":"2026-10-15T15:16:24.543Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Red Hat Single Sign-On 7","vendor":"Red Hat","versions":[],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00248,"percentile":0.15172,"score_date":"2026-10-23"},"published_at":"2026-10-12T06:18:08.096Z","modified_at":"2026-10-15T15:16:24.543Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109082","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T15:16:24.543Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109082","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-109082","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2549478","tags":["issue-tracking","x_refsource_REDHAT"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-15T13:11:52.777242Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-15T15:16:24.543Z","content_hash":"41a70cd900bcb5512e6600023ae8292624398a4974442180ade6e15113b8a7b9"}}