{"id":"BIT-keycloak-2026-37982","summary":"Keycloak: org.keycloak.authentication: keycloak: unauthorized account takeover via webauthn token replay","details":"A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay `ExecuteActionsActionToken` tokens within Keycloak's WebAuthn (Web Authentication) flow. By intercepting an execute-actions email link, an attacker can register their own authenticator to a victim's account. This leads to unauthorized enrollment of a hardware-backed credential, enabling persistent account takeover.","aliases":["CVE-2026-37982","GHSA-w4p5-rfh6-cwrv"],"modified":"2026-09-08T08:48:06.813118439Z","published":"2026-08-25T11:42:22.236Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*","cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19596"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19597"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-37982"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455329"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37982"}],"affected":[{"package":{"name":"keycloak","ecosystem":"Bitnami","purl":"pkg:bitnami/keycloak"},"ranges":[{"type":"SEMVER","events":[{"introduced":"26.4.0"},{"fixed":"26.4.12"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-37982.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}