CVE-2016-10866: The all-in-one-wp-security-and-firewall plugin before 4.2.0 for WordPress has multiple XSS issues.

medium Affects all-in-one-wp-security-and-firewall (WordPress plugin). Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

The all-in-one-wp-security-and-firewall plugin before 4.2.0 for WordPress has multiple XSS issues.

Package
all-in-one-wp-security-and-firewall (WordPress plugin) WordPress
Affected versions
<4.2.0
Fixed in
4.2.0
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 1% (60.3th percentile)
Published
2019-08-13
Source
nvd

References

CWE-79
NVD recordall-in-one-wp-security-and-firewall (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.

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