{
"id": "GHSA-w4p5-rfh6-cwrv",
"aliases": [
"CVE-2026-37982"
],
"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.",
"summary": "Keycloak: Unauthorized account takeover via WebAuthn token replay",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "26.6.2"
}
]
}
],
"package": {
"name": "org.keycloak:keycloak-services",
"ecosystem": "Maven"
}
}
],
"modified": "2026-06-04T15:35:19Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
}
],
"published": "2026-05-19T12:31:40Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-37982",
"type": "ADVISORY"
},
{
"url": "https://github.com/keycloak/keycloak/pull/49126",
"type": "WEB"
},
{
"url": "https://github.com/keycloak/keycloak/commit/2d1a24f501454a44c52daa62855419b31dc499c1",
"type": "WEB"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:19596",
"type": "WEB"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:19597",
"type": "WEB"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-37982",
"type": "WEB"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455329",
"type": "WEB"
},
{
"url": "https://github.com/keycloak/keycloak",
"type": "PACKAGE"
},
{
"url": "https://github.com/keycloak/keycloak/releases/tag/26.6.2",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-294"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-05-19T12:16:18Z",
"github_reviewed_at": "2026-06-04T15:35:19Z"
}
}