GHSA-w4p5-rfh6-cwrv
Keycloak: Unauthorized account takeover via WebAuthn token replay
At a glance
- Published
- Updated
- CVE
- CVE-2026-37982
- Aliases
- BIT-keycloak-2026-37982
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
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 packages
| Package | Versions |
|---|---|
| Maven · org.keycloak:keycloak-services | introduced 0, fixed 26.6.2 |
References
- 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
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |