---
title: "OPNsense - Path Traversal & Remote Code Execution"
description: "OPNsense < 26.1.11 contains a path traversal in Firewall Alias GeoIP importer's process_zip() and process_gzip() caused by unvalidated CSV country_code, letting attackers with Firewall Alias Edit privilege write files as root and execute commands, exploit requires Firewall Alias Edit privilege."
url: https://panop.io/threat-heartbeat/CVE-2026-57155/
---

# CVE-2026-57155 OPNsense - Path Traversal & Remote Code Execution

OPNsense < 26.1.11 contains a path traversal in Firewall Alias GeoIP importer's process\_zip() and process\_gzip() caused by unvalidated CSV country\_code, letting attackers with Firewall Alias Edit privilege write files as root and execute commands, exploit requires Firewall Alias Edit privilege.

CVSS base score 9.9 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-57155)

## Details

Type

Path Traversal

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Published

15 October 2026

Updated

16 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to version 26.1.11 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-57155](https://nvd.nist.gov/vuln/detail/CVE-2026-57155)
- [https://github.com/opnsense/core/commit/c46aced9c47d956167e294911113bc334fea5f48](https://github.com/opnsense/core/commit/c46aced9c47d956167e294911113bc334fea5f48)
- [https://github.com/opnsense/core/commit/e7fbfaa7f5e070da667e3f243da11fd3d4b731fa](https://github.com/opnsense/core/commit/e7fbfaa7f5e070da667e3f243da11fd3d4b731fa)
- [https://github.com/opnsense/core/security/advisories/GHSA-wjqq-rfmm-v5h3](https://github.com/opnsense/core/security/advisories/GHSA-wjqq-rfmm-v5h3)
- [https://hackerask.com/posts/opnsense](https://hackerask.com/posts/opnsense)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)