{"id":"CVE-2026-37982","aliases":["GHSA-w4p5-rfh6-cwrv"],"url":"https://o3.security/vulnerability/CVE-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.","published":"2026-08-25T11:42:22.236Z","modified":"2026-09-08T08:48:06.813118439Z","cvss":null,"epss":{"score":0.0044,"percentile":0.36657,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Bitnami","name":"keycloak","fixedVersion":"26.4.12"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-08T08:48:06.813118439Z"}}