CVE-2026-37982
A flaw was found in Keycloak.
Published May 19, 2026 · updated Jun 17, 2026 · redhat build of keycloak
A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay 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.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 19, 2026 · NIST NVD
Detected
A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay 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.
Jun 17, 2026 · NIST NVD
Updated
A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay 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
- cpe redhat/build of keycloakversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-37982
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-37982
A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay tokens within Keycloak's WebAuthn (Web Authentication) flow. By intercepting an execute-actions email link, an attacker can register their own authentica
nvd.nist.gov