CVE-2026-73737 Unauthenticated Path Traversal in HPE Networking Fabric Composer API Endpoint Allows Unauthorized File Modification

Medium 4.8 Published 1 Sep 2026 Updated 1 Sep 2026

Unauthenticated attackers can exploit path traversal in HPE Fabric Composer to modify user files and potentially alter system configurations.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-73737?

CVE-2026-73737 is a medium-severity path traversal vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An unauthenticated path traversal vulnerability exists in the API endpoint of HPE Networking Fabric Composer. Successful exploitation could allow an unauthenticated adjacent attacker to manipulate user generated files, potentially leading to unauthorized changes in critical system configurations, if certain preconditions outside of the attacker's control are met.

Weakness: CWE-22

Which versions are affected by CVE-2026-73737?

It affects 1 product.

Products include Arubanetworks Fabric Composer.

How do I fix CVE-2026-73737?

No fix has been published for CVE-2026-73737 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-73737 being exploited?

There is no known exploitation of CVE-2026-73737 in the wild and no public exploit code.

All Arubanetworks Fabric Composer vulnerabilities

Sources

Also known as GHSA-wfx9-pm5m-wr75.