CVEvulnerability
CVE-2026-37982
6.8 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-05-19
- Last modified
- 2026-10-29
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-294
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 configurations
• redhat build of keycloak (>= 26.4 < 26.4.12)
Related
Weakness · CWE (1)
- CWE-294 Authentication Bypass by Capture-replay weakness
References
- 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