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CVE-2022-21664: WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. Due to lack of proper sanitization in one of the classes, there's potential for uninten

high Affects WordPress core. Feed 2026.10.29.3, updated 2026-10-29; published ; advisory modified .

WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. Due to lack of proper sanitization in one of the classes, there's potential for uninten

Package
WordPress core WordPress
Affected versions
<5.8.3
Fixed in
5.8.3
Severity
high  CVSS 7.4
Exploitation
not on CISA KEV · EPSS 4% (89.9th percentile)
Published
2022-01-06
Source
nvd

References

CWE-89
NVD recordWordPress core 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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