CVE-2025-11975

FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) <= 1.1.23.0 - Missing Authorization to Authenticated (Subscriber+) Sync Rule Creation

CVSS 4.3 MEDIUMEPSS 0.2%CWE-862

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

fusewp · FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.)

References

https://plugins.trac.wordpress.org/changeset/3383939/fusewp/trunk/src/core/src/Admin/SettingsPage/SyncPage.php https://www.wordfence.com/threat-intel/vulnerabilities/id/6c68e8a1-926f-497f-b9f2-b0a67cd09adf?source=cve