CVE-2025-11975 Missing authorization in FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.)
Unauthenticated attackers can add and edit sync rules due to missing capability checks in the FuseWP WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-11975?
CVE-2025-11975 is a medium-severity missing authorization vulnerability in FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.), published on 31 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2025-11975?
How do I fix CVE-2025-11975?
No fix has been published for CVE-2025-11975 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-11975 being exploited?
There is no known exploitation of CVE-2025-11975 in the wild and no public exploit code.
Sources
Also known as GHSA-383x-8v44-m82q.