CVE-2023-5411: 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.

medium Affects funnelforms-free (WordPress plugin). Feed 2026.10.29.3, updated 2026-10-29; published 2023-11-22; advisory modified 2026-06-17.

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.

Package: funnelforms-free (WordPress plugin) WordPress
Affected versions: <=3.4
Fixed in: no fix recorded
Severity: medium CVSS 4.3
Exploitation: not on CISA KEV · EPSS 0% (33.2th percentile)
Published: 2023-11-22
Source: nvd

References

CWE-862

NVD record funnelforms-free (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden wordpress /var/www/html

# or, without Composer
pipx install phpwarden   &&   phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

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