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CVE-2025-11976

MEDIUM 4.3 CVSS 3.1
Published
October 25, 2025
Last modified
October 8, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-352
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Description

The FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.23.0. This is due to missing or incorrect nonce validation on the save_changes function. This makes it possible for unauthenticated attackers to add or edit sync rules via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected WordPress components

  • FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) Plugin · fusewp
    Confirmed match Active
    Up to and including 1.1.23.0
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • fusewp FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) — Up to and including 1.1.23.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3383939/fusewp/trunk/src/core/src/Admin/SettingsPage/SyncPage.php
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/e5957d6b-40e5-44c4-9a1b-e9c49e175162?source=cve
  • nvd.nist.gov Official NVD record