CVE-2026-37982

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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Produits concernés

• Red Hat build of Keycloak 26.4
• Red Hat build of Keycloak 26.4.12
• Redhat build of keycloak

Scores CVSS

Faiblesses (CWE)

• CWE-294

Références

• https://access.redhat.com/errata/RHSA-2026:19596 Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:19597 Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-37982 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2455329 Vendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories