CVE-2021-24889: The Ninja Forms Contact Form WordPress plugin before 3.6.4 does not escape keys of the fields POST parameter, which could allow high privilege users to perform SQL injections attacks

high Affects ninja-forms (WordPress plugin). Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

The Ninja Forms Contact Form WordPress plugin before 3.6.4 does not escape keys of the fields POST parameter, which could allow high privilege users to perform SQL injections attacks

Package
ninja-forms (WordPress plugin) WordPress
Affected versions
<3.6.4
Fixed in
3.6.4
Severity
high  CVSS 7.2
Exploitation
not on CISA KEV · EPSS 1% (70.7th percentile)
Published
2021-11-29
Source
nvd

References

CWE-89
NVD recordninja-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.

# 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.

Install docs   How findings are ranked

Related advisories