# CVE-2026-73706: Authentication Bypass in the API of HPE Networking Fabric Composer allows Data Exposure and Unauthorized Changes

> Unauthenticated attackers can access system information and modify settings in HPE Networking Fabric Composer, potentially disrupting operations.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-g5jc-5x3g-7wmf

## What is CVE-2026-73706?

CVE-2026-73706 is a high-severity authentication bypass vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-73706?

It affects 1 product.


Products: Arubanetworks Fabric Composer.

## How do I fix CVE-2026-73706?

No fix has been published for CVE-2026-73706 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73706 being exploited?

There is no known exploitation of CVE-2026-73706 in the wild and no public exploit code.

## Other vulnerabilities in Arubanetworks Fabric Composer

- [CVE-2026-76657](https://insights.sbomify.com/CVE-2026-76657/): Authentication Bypass in HPE Networking Fabric Composer API allows Administrative Access (critical 10.0)
- [CVE-2026-76658](https://insights.sbomify.com/CVE-2026-76658/): Unauthenticated Remote Code Execution in HPE Networking Fabric Composer SSH Daemon (critical 10.0)
- [CVE-2026-19766](https://insights.sbomify.com/CVE-2026-19766/): Authentication Bypass leads to Administrative control of adjacent network hosts in HPE Networking Fabric Composer (critical 9.6)
- [CVE-2026-73700](https://insights.sbomify.com/CVE-2026-73700/): Cross-site scripting in Fabric Composer (critical 9.0)
- [CVE-2026-73701](https://insights.sbomify.com/CVE-2026-73701/): Unauthenticated Remote Code Execution in HPE Networking Fabric Composer (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73706 and fix it if it is affected.

What it is: CVE-2026-73706 is a high-severity authentication bypass vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-73706 in the wild and no public exploit code.

Affected product: Arubanetworks Fabric Composer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-73706/ (Markdown: https://insights.sbomify.com/CVE-2026-73706/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73706
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73706
- OSV: https://osv.dev/vulnerability/CVE-2026-73706

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73706/
Summaries are generated and may contain mistakes; the official description above is the record.