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CVE-2021-4407: The Custom Banners plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.2.2 This is due to missing or incorrect nonce validation on the saveCustomFields

medium Affects custom-banners (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Custom Banners plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.2.2 This is due to missing or incorrect nonce validation on the saveCustomFields

Package
custom-banners (WordPress plugin) WordPress
Affected versions
<=3.2.2
Fixed in
no fix recorded
Severity
medium  CVSS 4.3
Exploitation
not on CISA KEV · EPSS 0% (32.4th percentile)
Published
2023-07-12
Source
nvd

References

CWE-352
NVD recordcustom-banners (WordPress plugin) advisories

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# 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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