CVE-2023-1405: The Formidable Forms WordPress plugin before 6.2 unserializes user input, which could allow anonymous users to perform PHP Object Injection when a suitable gadget is present.

high Affects formidable-forms (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Formidable Forms WordPress plugin before 6.2 unserializes user input, which could allow anonymous users to perform PHP Object Injection when a suitable gadget is present.

Package
formidable-forms (WordPress plugin) WordPress
Affected versions
<6.2
Fixed in
6.2
Severity
high  CVSS 7.5
Exploitation
not on CISA KEV · EPSS 1% (53.1th percentile)
Published
2024-01-16
Source
nvd

References

CWE-502
NVD recordformidable-forms (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.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

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

Install docs   How findings are ranked

Related advisories