MEDIUM6.8
GHSA-w4p5-rfh6-cwrv
Keycloak: Unauthorized account takeover via WebAuthn token replay
Quick fix
GHSA-w4p5-rfh6-cwrv — org.keycloak:keycloak-services: upgrade to the fixed version with the command below.
# pom.xml: bump <version>26.6.2</version> for org.keycloak:keycloak-servicesDetails
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
Maven/org.keycloak:keycloak-services
Introduced in:
0Fixed in: 26.6.2Fix
# pom.xml: bump <version>26.6.2</version> for org.keycloak:keycloak-servicesReferences
- https://nvd.nist.gov/vuln/detail/CVE-2026-37982[ADVISORY]
- https://github.com/keycloak/keycloak/pull/49126[WEB]
- https://github.com/keycloak/keycloak/commit/2d1a24f501454a44c52daa62855419b31dc499c1[WEB]
- https://access.redhat.com/errata/RHSA-2026:19596[WEB]
- https://access.redhat.com/errata/RHSA-2026:19597[WEB]
- https://access.redhat.com/security/cve/CVE-2026-37982[WEB]
- https://bugzilla.redhat.com/show_bug.cgi?id=2455329[WEB]
- https://github.com/keycloak/keycloak[PACKAGE]
- https://github.com/keycloak/keycloak/releases/tag/26.6.2[WEB]