CVE-2026-123963

Explicitly identifies and limits actions permitted without authentication, preventing critical functions from being exposed.

Access enforcement requires prior authentication before any authorization decision for critical functions.

Directly mandates unique identification and authentication of users before access to functions requiring identity.

Extends the same authentication requirement to non-organizational users accessing critical functionality.

Requires authentication of services before they can invoke or expose critical functions.

Managing identities and credentials is a prerequisite for authentication but does not itself enforce it on critical functions.

Defining and enforcing authorizations assumes prior authentication and therefore only partially mitigates the absence of authentication.

Protecting networks from unauthorized access can be undermined by missing authentication but does not address the root authentication gap.

Mandating segregated approval and oversight for non-human identities reduces the chance that weak or orphaned credentials can be exploited for unauthorized authentication.

Training developers to recognize authentication requirements can reduce some instances of this architectural omission, but CWE-306 is primarily a design-time oversight rather than a knowledge gap or deliberate choice, so education moves only a minority of cases.

Network controls (firewalls, network authentication, filtering, segmentation) can block external or unauthorized network access to an unauthenticated critical function, but the missing authentication remains in the application and is still exploitable by anyone who reaches the service path — including internal users, anyone bypassing the firewall, or cases where the function is intentionally network-exposed.