# CVE-2026-54406: Path traversal in UniFi Network Application

> High-privilege network attackers can exploit path traversal in UniFi Network Application to escalate write permissions on the host.

- **Severity:** High 8.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jul 2026
- **Updated:** 2 Jul 2026
- **Also known as:** GHSA-h9fm-m325-j8cf

## What is CVE-2026-54406?

CVE-2026-54406 is a high-severity path traversal vulnerability in Ubiquiti Inc UniFi Network Application, published on 2 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A malicious actor with access to the network and high privileges could exploit a Path Traversal vulnerability found in self-hosted instances of UniFi Network Application to escalate write permission on the host device.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-54406?

It affects 1 product.


Products: Ui Unifi Network Application.

## How do I fix CVE-2026-54406?

No fix has been published for CVE-2026-54406 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54406 being exploited?

There is no known exploitation of CVE-2026-54406 in the wild and no public exploit code.

## Other vulnerabilities in Ubiquiti Inc UniFi Network Application

- [CVE-2023-41721](https://insights.sbomify.com/CVE-2023-41721/): Missing authorization in UniFi Network Application (critical 10.0)
- [CVE-2023-28365](https://insights.sbomify.com/CVE-2023-28365/): Command injection in UniFi Network application (critical 9.1)
- [CVE-2026-55114](https://insights.sbomify.com/CVE-2026-55114/): Privilege escalation in UniFi Network Application (high 8.8)
- [CVE-2026-55118](https://insights.sbomify.com/CVE-2026-55118/): Privilege escalation in UniFi Network Application (high 8.3)
- [CVE-2024-42025](https://insights.sbomify.com/CVE-2024-42025/): Command injection in UniFi Network Application (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54406 and fix it if it is affected.

What it is: CVE-2026-54406 is a high-severity path traversal vulnerability in Ubiquiti Inc UniFi Network Application, published on 2 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-54406 in the wild and no public exploit code.

Affected product: Ubiquiti Inc UniFi Network Application. 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-2026-54406/ (Markdown: https://insights.sbomify.com/CVE-2026-54406/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54406
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54406
- OSV: https://osv.dev/vulnerability/CVE-2026-54406

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54406/
Summaries are generated and may contain mistakes; the official description above is the record.