CVE-2025-11976: 
WordPress vulnerability analysis and mitigation

The vulnerability identified as CVE-2025-11976 affects the FuseWP – WordPress User Sync to Email List & Marketing Automation plugin for WordPress. The vulnerability was discovered by Jonas Benjamin Friedli and was disclosed on October 24, 2025. This security issue affects all versions of the plugin up to and including version 1.1.23.0 (NVD).

The vulnerability is classified as a Cross-Site Request Forgery (CSRF) with a CVSS v3.1 Base Score of 4.3 (MEDIUM). The vulnerability vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N, indicating network accessibility, low attack complexity, no privileges required, and user interaction required. The root cause is attributed to missing or incorrect nonce validation in the save_changes function (NVD).

The vulnerability allows unauthenticated attackers to add or edit sync rules through forged requests, provided they can successfully trick a site administrator into performing specific actions, such as clicking on a malicious link (NVD).

A fix has been implemented in the WordPress plugin repository as evidenced by the code changes (WordPress Plugin). Users are advised to update their FuseWP plugin to the latest version that includes the security patch.