PT-2026-41872 · Red Hat · Red Hat Build Of Keycloak

Published 2026-05-19 · Updated 2026-05-19 · CVE-2026-37982

NVD

CVSS v3.1

6.8

Medium

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

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.

Fix

Related Identifiers

CVE-2026-37982

Affected Products

Red Hat Build Of Keycloak

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-37982 · Security Note
• https://access.redhat.com/security/cve/CVE-2026-37982 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2455329 · Note