---
id: "CVE-2026-109982"
kind: "vulnerability"
aliases: ["CVE-2026-109982"]
title: "WordPress MB Custom Post Types plugin: any logged-in user can wipe configuration"
severity: "medium"
cvss: 4.2
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "wordpress", "wordpress-plugin"]
not_affected_if: ["no-user-registration", "plugin-version-2.12.2-or-later"]
published_at: "2026-10-16T07:17:10+00:00"
first_seen_at: "2026-10-23T21:57:12+00:00"
updated_at: "2026-10-25T04:41:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109982", "first_seen_at": "2026-10-23T21:57:12+00:00"}]
---

# WordPress MB Custom Post Types plugin: any logged-in user can wipe configuration

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2 lacks a capability check and nonce validation on its migration actions. Any authenticated user, including a subscriber, can trigger a one-way migration that creates published records and permanently deletes the plugin's post-type and taxonomy configuration.

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

## How to check

- Check the installed plugin version in the WordPress admin Plugins screen or with `wp plugin get mb-custom-post-types --field=version` (slug assumed; confirm it matches the plugin).
- Review which accounts exist on the site; any subscriber-level account can reach the flaw.

## Fix

- Update the MB Custom Post Types & Custom Taxonomies plugin to `2.12.2` or later.
- Until updated, restrict or remove unneeded subscriber and contributor accounts.

## Timeline

- 2026-10-23T21:57:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109982

## From the sources

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2 does not perform a capability check or validate a nonce on its migration actions, allowing any authenticated user, such as a subscriber, to trigger a one-way migration that creates published records and permanently deletes a companion MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2's entire post-type and taxonomy configuration.

---

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