CVE-2023-5383: Funnelforms

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The Funnelforms Free plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.4. This is due to missing or incorrect nonce validation on the fnsf_copy_posts function. This makes it possible for unauthenticated attackers to create copies of arbitrary posts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. CVE-2023-5990 appears to be a duplicate of this issue.

Affected products

• Funnelforms Funnelforms: up to and including 3.4

Published 2023-11-22. Last modified 2026-06-17.