Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Keycloak | >= 26.4, < 26.4.12 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:19596Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19597Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-37982Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2455329Vendor Advisory
FAQ
What is CVE-2026-37982?
CVE-2026-37982 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 intercept...
How severe is CVE-2026-37982?
CVE-2026-37982 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-37982?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Keycloak.