CVE-2023-3122: The GD Mail Queue plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email contents in versions up to, and including, 3.9.3 due to insufficient input sanitization and output escapin

high Affects gd-mail-queue (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The GD Mail Queue plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email contents in versions up to, and including, 3.9.3 due to insufficient input sanitization and output escapin

Package
gd-mail-queue (WordPress plugin) WordPress
Affected versions
<=3.9.3
Fixed in
no fix recorded
Severity
high  CVSS 7.2
Exploitation
not on CISA KEV · EPSS 0% (40.0th percentile)
Published
2023-07-12
Source
nvd

References

CWE-79
NVD recordgd-mail-queue (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.

Install docs   How findings are ranked

Related advisories