What’s Vulnerable › Vulnerabilities

CVE-2023-5411: Funnelforms Free <= 3.4 - Missing Authorization to Post Modification

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-22 · updated 2026-06-17
• Weakness: CWE-862

Description

The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fnsf_af2_save_post function in versions up to, and including, 3.4. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to modify certain post values. Note that the extent of modification is limited due to fixed values passed to the wp_update_post function.

Affected products

• funnelforms Interactive Contact Form and Multi Step Form Builder with Drag & Drop Editor – Funnelforms Free: through 3.4

References

• https://plugins.trac.wordpress.org/changeset/2986938/funnelforms-free
• https://www.wordfence.com/threat-intel/vulnerabilities/id/816f5fc1-e4e6-4c0d-b222-fe733f026e33?source=cve
• https://plugins.trac.wordpress.org/changeset/2986938/funnelforms-free
• https://www.wordfence.com/threat-intel/vulnerabilities/id/816f5fc1-e4e6-4c0d-b222-fe733f026e33?source=cve

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