{"id":"EM-20261105-EJR7","url":"https://cyber.eventmonitor.net/incident/EM-20261105-EJR7/keycloak-vulnerability-cve-2026-92857/","type":"cve","title":"Keycloak Vulnerability (CVE-2026-92857)","subtitle":"CVE-2026-92857","subject":"CVE-2026-92857","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-05T18:17:10.887Z","firstSignal":"2026-11-05T00:00:00.000Z","lastSignal":"2026-11-05T18:17:10.887Z","updated":"2026-11-06T00:58:29.349Z","revision":1,"life":[{"status":"Born","at":"2026-11-05T18:17:10.887Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-05T18:17:10.887Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-05T00:00:00.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-05T18:17:10.887Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261105-EJR7 created."}],"stages":[{"name":"Disclosed","at":"2026-11-05T18:17:10.887Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-05T18:17:10.887Z","detail":"CVSS 8.1"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-05T00:00:00.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-05T00:00:00.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-92857 (important)","text":"keycloak-services: keycloak-services: DCR protocol mapper config not validated, allowing IAT holders to forge sub and aud claims in signed tokens","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-92857.json"},{"at":"2026-11-05T18:17:10.887Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-92857 (CVSS 8.1)","text":"Keycloak provides a Dynamic Client Registration feature that allows users with specific tokens to register their own applications. A flaw in how Keycloak validates these registration requests allows an attacker to create a malicious application that forges identity information. By mapping their own user profile details to protected fields like the user ID (sub) or intended audience (aud), an attacker can generate signed security tokens that make them appear to be a different user. This could allow an attacker to impersonate other users or gain unauthorized access to services that rely on these","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92857"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-05T18:17:10.887","score":8.1,"severity":"HIGH","desc":"Keycloak provides a Dynamic Client Registration feature that allows users with specific tokens to register their own applications. A flaw in how Keycloak validates these registration requests allows an attacker to create a malicious application that forges identity information. By mapping their own ","product":"","seen":1793913029679},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}