CVE-2026-37982
MEDIUM
NVD
CVSS Score
6.8
Severity
MEDIUM
Published
May 19, 2026
Vendor
unknown
Description
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.