CVE-2021-4450: The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack

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

The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack

Package
post-grid (WordPress plugin) WordPress
Affected versions
<=2.1.12
Fixed in
no fix recorded
Severity
high  CVSS 8.8
Exploitation
not on CISA KEV · EPSS 0% (41.8th percentile)
Published
2024-10-16
Source
nvd

References

CWE-89
NVD recordpost-grid (WordPress plugin) advisories

Am I affected?

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

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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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