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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.

PUBLISHED Reserved 2025-10-20 | Published 2025-10-25 | Updated 2025-10-27 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-10-20:Vendor Notified
2025-10-24:Disclosed

Credits

Jonas Benjamin Friedli finder

References

www.wordfence.com/...-40e5-44c4-9a1b-e9c49e175162?source=cve

plugins.trac.wordpress.org/...dmin/SettingsPage/SyncPage.php

cve.org (CVE-2025-11976)

nvd.nist.gov (CVE-2025-11976)

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