CVE-2026-8830
Last modified
CVE-2026-8830 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's parameters, such as public key algorithms, match the realm's configured WebAuthn policies. This could lead to the creation of credentials that do not adhere to administrative security requirements, potentially weakening the overall security posture of the system by allowing non-compliant authentication methods.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions |
References
- https://access.redhat.com/security/cve/CVE-2026-8830Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2479565Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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