What’s Vulnerable › Vulnerabilities

CVE-2026-5582: FuseWP <= 1.1.24.2 - Cross-Site Request Forgery to Sync Rule Status Toggle

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-30 · updated 2026-07-31
• Weakness: CWE-352

Description

The FuseWP plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.24.2. This is due to missing nonce verification on the toggle_sync_status() function. This makes it possible for unauthenticated attackers to toggle the status of sync rules (enable/disable) via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.): through 1.1.24.2

References

• https://plugins.trac.wordpress.org/browser/fusewp/tags/1.1.24.2/src/core/src/AjaxHandler.php#L149
• https://plugins.trac.wordpress.org/browser/fusewp/trunk/src/core/src/AjaxHandler.php#L149
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3505110@fusewp/trunk/src/core/src/AjaxHandler.php&old=3172907@fusewp/trunk/src/core/src/AjaxHandler.php&sfp_email=&sfph_mail=
• https://wordpress.org/plugins/fusewp/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1ff5889e-b9fd-494f-b25d-78e85e94d34c?source=cve

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