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CVE-2026-37982

nvd nist
Published: May 19, 2026Modified: Jun 17, 2026

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6.8
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Exploitability: 1.6 / Impact: 5.2
Source: secalert@redhat.com (Secondary)

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.

Affected (1)

Redhat
1 product
Build Of Keycloak
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Build Of Keycloak
From 26.4 to 26.4.12

Related CWEs

CWE-294
Authentication Bypass by Capture-replay
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).

References (4)

Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory

Timeline

No history available yet.