FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) vulnerabilities
Plugin slug fusewp · 3 known vulnerabilities · latest disclosed 2026-07-28 · WordPress.org page
Every listed vulnerability has a fix. Version 1.1.25.2 or later is not affected by any of them. If your site runs an older version, update it.
0 of 3 rated high or critical (CVSS 7 or more).
Known vulnerabilities in FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.)
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 4.3 | <= 1.1.24.2 | 1.1.25.2 | CVE-2026-5582 | 2026-07-28 | Advisory |
| Medium 4.3 | <= 1.1.23.0 | 1.1.23.1 | CVE-2025-11975 | 2025-10-30 | Advisory |
| Medium 4.3 | <= 1.1.23.0 | 1.1.23.1 | CVE-2025-11976 | 2025-10-24 | Advisory |
Check if a site is affected
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Questions
Is the FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin safe to use?
All 3 known issues are fixed in current versions (1.1.25.2 or later). Keeping it updated is what matters.
How do I check which version of FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.