---
id: "CVE-2018-25439"
kind: "vulnerability"
aliases: ["CVE-2018-25439"]
title: "MetInfo CMS: unauthenticated path traversal reads arbitrary server files"
severity: "high"
cvss: 8.7
epss: 0.00469
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["metinfo-cms", "package", "php", "self-hosted", "windows"]
not_affected_if: ["not-running-metinfo", "version-6.1.1-or-later"]
published_at: "2026-10-22T11:17:03+00:00"
first_seen_at: "2026-10-23T21:57:30+00:00"
updated_at: "2026-10-24T07:15:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-25439", "first_seen_at": "2026-10-23T21:57:30+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2018-25439", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# MetInfo CMS: unauthenticated path traversal reads arbitrary server files

MetInfo CMS versions 6.0.0 before 6.1.1 let anyone send a crafted dir parameter to /include/thumb.php and read arbitrary files. On Windows, backslash sequences bypass the str_replace filter, exposing files such as config_db.php that hold database credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Check the installed MetInfo version and whether it is below 6.1.1; the sources do not give a command to test for the traversal.

## Fix

Upgrade MetInfo CMS to 6.1.1 or later.
If upgrading is not possible, rotate database credentials and restrict access to /include/thumb.php, but the sources do not describe a configuration workaround.

## Timeline

- 2026-10-23T21:57:30+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2018-25439
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2018-25439

## From the sources

MetInfo CMS 6.0.0 before 6.1.1 contains a path traversal vulnerability in /include/thumb.php that allows unauthenticated attackers to read arbitrary files via the dir parameter. Attackers can send crafted requests with backslash sequences bypassing the str_replace filter to read files like config_db.php on Windows. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_