CVE-2025-11976: CWE-352 Cross-Site Request Forgery (CSRF) in fusewp FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.)
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.
AI Analysis
Technical Summary
The FuseWP plugin for WordPress, which integrates user sync functionality with email marketing services such as Mailchimp and Constant Contact, contains a CSRF vulnerability (CWE-352) due to improper nonce validation in the save_changes function. This allows attackers to perform unauthorized changes to sync rules by leveraging an administrator's interaction with a crafted request. The vulnerability affects all versions up to 1.1.23.0 and has a CVSS 3.1 base score of 4.3, indicating medium severity. There is no information about an available patch or vendor advisory specifying remediation.
Potential Impact
An attacker can cause an administrator to unknowingly add or modify synchronization rules between WordPress users and email marketing platforms by exploiting the CSRF vulnerability. This could lead to unauthorized changes in how user data is synced, potentially impacting data integrity or marketing workflows. There is no indication of direct confidentiality or availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, administrators should avoid clicking on untrusted links while logged into WordPress with administrative privileges. Implementing additional CSRF protections or restricting administrative access may help reduce risk.
CVE-2025-11976: CWE-352 Cross-Site Request Forgery (CSRF) in fusewp FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.)
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The FuseWP plugin for WordPress, which integrates user sync functionality with email marketing services such as Mailchimp and Constant Contact, contains a CSRF vulnerability (CWE-352) due to improper nonce validation in the save_changes function. This allows attackers to perform unauthorized changes to sync rules by leveraging an administrator's interaction with a crafted request. The vulnerability affects all versions up to 1.1.23.0 and has a CVSS 3.1 base score of 4.3, indicating medium severity. There is no information about an available patch or vendor advisory specifying remediation.
Potential Impact
An attacker can cause an administrator to unknowingly add or modify synchronization rules between WordPress users and email marketing platforms by exploiting the CSRF vulnerability. This could lead to unauthorized changes in how user data is synced, potentially impacting data integrity or marketing workflows. There is no indication of direct confidentiality or availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, administrators should avoid clicking on untrusted links while logged into WordPress with administrative privileges. Implementing additional CSRF protections or restricting administrative access may help reduce risk.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-10-20T16:07:42.381Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68fc745955d697d32d439083
Added to database: 10/25/2025, 6:55:21 AM
Last enriched: 4/9/2026, 9:13:13 AM
Last updated: 5/10/2026, 8:01:41 AM
Views: 335
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