CVE-2026-73728 Authenticated Denial of Service Vulnerabilities in HPE Networking Fabric Composer API

Medium 6.5 Published 1 Sep 2026 Updated 2 Sep 2026

Authenticated low-privilege users can cause denial of service in HPE Networking Fabric Composer API, interrupting normal service operation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-73728?

CVE-2026-73728 is a medium-severity denial of service vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Denial-of-service vulnerabilities exist in the API of HPE Networking Fabric Composer that could allow an authenticated low privilege operator user to cause a denial of service. Successful exploitation could allow an attacker to interrupt the normal operation of the affected service.

Weakness: CWE-400

Which versions are affected by CVE-2026-73728?

It affects 1 product.

Products include Arubanetworks Fabric Composer.

How do I fix CVE-2026-73728?

No fix has been published for CVE-2026-73728 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-73728 being exploited?

There is no known exploitation of CVE-2026-73728 in the wild and no public exploit code.

All Arubanetworks Fabric Composer vulnerabilities

Sources

Also known as GHSA-hprj-rcw4-693v.