CVE-2026-73704 Authenticated Command Injection Leading to Administrative Access in HPE Networking Fabric Composer API

High 8.8 Published 1 Sep 2026 Updated 2 Sep 2026

Authenticated low-privilege users can bypass command sanitization to gain administrative access and compromise the system.

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-2026-73704?

CVE-2026-73704 is a high-severity command injection 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

A command sanitization bypass exists in the API of HPE Networking Fabric Composer. Successful exploitation could allow an authenticated low privilege operator user to escalate their permissions to those of an administrative user, leading to complete compromise of the affected system.

Weakness: CWE-77

Which versions are affected by CVE-2026-73704?

It affects 1 product.

Products include Arubanetworks Fabric Composer.

How do I fix CVE-2026-73704?

No fix has been published for CVE-2026-73704 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-73704 being exploited?

There is no known exploitation of CVE-2026-73704 in the wild and no public exploit code.

All Arubanetworks Fabric Composer vulnerabilities

Sources

Also known as GHSA-vhgg-89gv-3hfg.