CVE-2025-11976 Cross-site request forgery in FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.)
Unauthenticated attackers can trick administrators into creating or editing sync rules via CSRF, potentially altering marketing automation configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-11976?
CVE-2025-11976 is a medium-severity vulnerability in FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.), published on 25 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2025-11976?
How do I fix CVE-2025-11976?
No fix has been published for CVE-2025-11976 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-11976 being exploited?
There is no known exploitation of CVE-2025-11976 in the wild and no public exploit code.
Sources
Also known as GHSA-p4jw-m7hw-hjrg.