---
id: "CVE-2026-109219"
kind: "vulnerability"
aliases: ["CVE-2026-109219"]
title: "The Mang Board plugin for WordPress is vulnerable to Arbitrary File Upload in version 2.4.4 via the mbw_file_upload\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "Mang Board (mangboard)", "fixed": ["2.4.5"], "affected": "<= 2.4.4", "ecosystem": "wordpress"}]
ecosystems: []
tags: ["file-upload", "mang-board", "mangboard", "package", "rce", "self-hosted", "unauthenticated", "wordpress"]
not_affected_if: ["guest-posts-disabled", "managed-hosting", "plugin-not-installed", "version->=2.4.5"]
published_at: "2026-10-16T05:17:29+00:00"
first_seen_at: "2026-10-23T21:57:12+00:00"
updated_at: "2026-10-23T23:34:20+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109219", "first_seen_at": "2026-10-23T21:57:12+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T23:34:20+00:00"}]
---

# The Mang Board plugin for WordPress is vulnerable to Arbitrary File Upload in version 2.4.4 via the mbw_file_upload…

Mang Board <= 2.4.4 (WordPress plugin, slug mangboard) lets unauthenticated visitors upload arbitrary files, including PHP, via mbw_file_upload. The image_path parameter bypasses the extension allowlist that only covers file_name. Exploitation needs guest posts enabled, which is the default. The nonce is printed on every public board page, so no login is needed. CVSS 9.8, reported by Osman Hussein via Wordfence, published 2026-10-15. Remote code execution on the web server is possible. No known exploitation or public PoC yet.

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

## Affected

- wordpress:Mang Board (mangboard) affected <= 2.4.4 fixed 2.4.5

## How to check

Plugin folder is wp-content/plugins/mangboard. Run: wp plugin list --name=mangboard --fields=name,version,status. Or check Plugins in wp-admin. Version <= 2.4.4 is vulnerable. Also check the board setting for guest posts (default on). Look for unexpected script files (.php, .phtml) under wp-content/uploads and the mangboard upload dirs.

## Fix

Update Mang Board to 2.4.5 or later; wp.org currently ships 2.4.6 (wp plugin update mangboard). The wp.org changelog uses dual numbering like '2.5.6 (2.4.5)'. Until patched, deactivate the plugin, or disable guest posting and block PHP execution in uploads directories. If a site was exposed, hunt for webshells and rotate credentials.

## Timeline

- 2026-10-23T21:57:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109219
- 2026-10-23T23:34:20+00:00 analyst — CVE record + WordPress.org changelog read. Fix: 2.4.5 per a secondary tracker (intelligent-pixel) and changelog security entries; wp.org current is 2.4.6. Not exploited, no public PoC found (KEV no, EPSS ~1%). Did not search X/HN.

## Documents

- [advisory] CVE Record: CVE-2026-109219 https://www.cve.org/CVERecord?id=CVE-2026-109219
- [fix] Mang Board - WordPress.org plugin page and changelog https://wordpress.org/plugins/mangboard/
- [mentions] WordSec: Mang Board vulnerabilities (Wordfence-sourced, reporter Osman Hussein) https://wordsec.net/vulnerabilities/plugins/mangboard

## From the sources

The Mang Board plugin for WordPress is vulnerable to Arbitrary File Upload in version 2.4.4 via the mbw_file_upload function. This is due to missing file extension validation on the attacker-supplied image_path parameter, whose basename-derived file name bypasses the extension allowlist applied only to the separate file_name parameter. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Exploitation requires the board to be configured to allow guest posts, which is the plugin's default mode; the required nonce is printed on every public board page, making it readable by any unauthenticated visitor without a WordPress login.

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