# CVE-2026-22557: Path traversal in UniFi Network Application

> A network-based attacker can exploit path traversal in UniFi Network Application to read system files and potentially take over accounts.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Mar 2026
- **Updated:** 19 Mar 2026
- **Also known as:** GHSA-vgw4-7v5q-w7f7

## What is CVE-2026-22557?

CVE-2026-22557 is a critical path traversal vulnerability in Ubiquiti Inc UniFi Network Application, published on 19 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in the UniFi Network Application to access files on the underlying system that could be manipulated to access an underlying account.

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

## Which versions are affected by CVE-2026-22557?


## How do I fix CVE-2026-22557?

No fix has been published for CVE-2026-22557 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-22557 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22557 exists.

Public exploit code:

- PoC for UniFi Network Application Pre-Auth Path Traversal (CVE-2026-22557) (github_poc): https://github.com/ThePotatoOfDoom/CVE-2026-22557-PoC
- CVE-2026-22557 (github_poc): https://github.com/0xredash/CVE-2026-22557
- Safely detect whether a UniFi Network Application controller is vulnerable to CVE-2026-22557 (github_poc): https://github.com/BishopFox/CVE-2026-22557-check
- Detection content for CVE-2026-22557 — UniFi Network Application unauthenticated path traversal (CVSS 10.0). Includes YARA, Sigma, KQL, Splunk SPL, Sysmon config, and a bash detection script. (github_poc): https://github.com/GarethMSheldon/cve-2026-22557-unifi-detection
- CVE-2026-22557 Path Traversal Ubiquti UniFi Network Application (github_poc): https://github.com/gagaltotal/CVE-2026-22557-Path-Traversal-Ubiquti-UniFi
- UniFi Network Application - Path Traversal (nuclei): http/cves/2026/CVE-2026-22557.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22557 and fix it if it is affected.

What it is: CVE-2026-22557 is a critical path traversal vulnerability in Ubiquiti Inc UniFi Network Application, published on 19 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22557 exists.

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-2026-22557/ (Markdown: https://insights.sbomify.com/CVE-2026-22557/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22557
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22557
- OSV: https://osv.dev/vulnerability/CVE-2026-22557

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22557/
Summaries are generated and may contain mistakes; the official description above is the record.