# CVE-2026-34911: Path traversal in EFG

> Low-privilege network attackers can exploit path traversal in UniFi OS devices to access sensitive system files.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 May 2026
- **Updated:** 22 May 2026
- **Also known as:** GHSA-m2r4-jq7j-hchx

## What is CVE-2026-34911?

CVE-2026-34911 is a high-severity path traversal vulnerability in Ubiquiti Inc EFG, published on 22 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to obtain sensitive information.

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

## Which versions are affected by CVE-2026-34911?

It affects 31 products.


Products: Ui Enterprise Fortress Gateway Firmware, Ui Enterprise Network Video Recorder Core Firmware, Ui Enterprise Network Video Recorder Firmware, Ui Unas 2 Firmware, Ui Unas 4 Firmware, Ui Unas Pro 4 Firmware, Ui Unas Pro 8 Firmware, Ui Unas Pro Firmware, Ui Unifi Cloud Gateway Fiber Firmware, Ui Unifi Cloud Gateway Industrial Firmware, Ui Unifi Cloud Gateway Max Firmware, Ui Unifi Cloud Gateway Ultra Firmware, Ui Unifi Cloud Key Plus Firmware, Ui Unifi Cloudkey Enterprise Firmware, Ui Unifi Cloudkey Firmware, Ui Unifi Dream Machine Beast Firmware, Ui Unifi Dream Machine Firmware, Ui Unifi Dream Machine Pro Firmware, Ui Unifi Dream Machine Pro Max Firmware, Ui Unifi Dream Machine Special Edition Firmware and 11 more.

## How do I fix CVE-2026-34911?

No fix has been published for CVE-2026-34911 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-34911 being exploited?

There is no known exploitation of CVE-2026-34911 in the wild and no public exploit code.

## Other vulnerabilities in Ubiquiti Inc EFG

- [CVE-2026-34908](https://insights.sbomify.com/CVE-2026-34908/): Ubiquiti UniFi OS Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2026-34909](https://insights.sbomify.com/CVE-2026-34909/): Ubiquiti UniFi OS Path Traversal (critical 10.0, exploited in the wild)
- [CVE-2026-34910](https://insights.sbomify.com/CVE-2026-34910/): Ubiquiti UniFi OS Improper Input Validation (critical 10.0, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34911 and fix it if it is affected.

What it is: CVE-2026-34911 is a high-severity path traversal vulnerability in Ubiquiti Inc EFG, published on 22 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-34911 in the wild and no public exploit code.

Affected product: Ubiquiti Inc EFG. 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-2026-34911/ (Markdown: https://insights.sbomify.com/CVE-2026-34911/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34911
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34911
- OSV: https://osv.dev/vulnerability/CVE-2026-34911

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34911/
Summaries are generated and may contain mistakes; the official description above is the record.