---
id: CVE-2025-11975
title: >-
  The FuseWP – WordPress User Sync to Email List & Marketing Automation
  (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin for WordPress is
  vulnerable to unauthorized modification of data due to a missing capability
  check on the sav…
summary: >-
  The FuseWP – WordPress User Sync to Email List & Marketing Automation
  (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin for WordPress is
  vulnerable to unauthorized modification of data due to a missing capability
  check on the sav…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2025-10-31'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-11975'
references:
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3383939/fusewp/trunk/src/core/src/Admin/SettingsPage/SyncPage.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/6c68e8a1-926f-497f-b9f2-b0a67cd09adf?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00208
epssPercentile: 0.09956
ingestedAt: '2026-10-07T21:54:14.911Z'
---

## Overview

The FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_changes() function in all versions up to, and including, 1.1.23.0. This makes it possible for unauthenticated attackers to add and edit sync rules.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.