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CVE-2021-24926: The Domain Check WordPress plugin before 1.0.17 does not sanitise and escape the domain parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting issue

medium Affects domain-check (WordPress plugin). Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

The Domain Check WordPress plugin before 1.0.17 does not sanitise and escape the domain parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting issue

Package
domain-check (WordPress plugin) WordPress
Affected versions
<1.0.17
Fixed in
1.0.17
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 13% (96.3th percentile)
Published
2022-02-01
Source
nvd

References

CWE-79
NVD recorddomain-check (WordPress plugin) advisories

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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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