Security Advisory

CVE-2026-37982

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-19 10:52:32

Last updated 2026-05-20 16:08:55

Assigner redhat

CVSS score not scored

State PUBLISHED

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.

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