CVE-2023-2032: The Custom 404 Pro WordPress plugin before 3.8.1 does not properly sanitize database inputs, leading to multiple SQL Injection vulnerabilities.

critical Affects custom-404-pro (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published 2023-06-27; advisory modified 2026-06-17.

The Custom 404 Pro WordPress plugin before 3.8.1 does not properly sanitize database inputs, leading to multiple SQL Injection vulnerabilities.

Package: custom-404-pro (WordPress plugin) WordPress
Affected versions: <3.8.1
Fixed in: 3.8.1
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 1% (60.6th percentile)
Published: 2023-06-27
Source: nvd

References

NVD record custom-404-pro (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.

# one-time install
pip install phpwarden

# then
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

CVE-2023-2023 medium The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputti same package: custom-404-pro (WordPress plugin)
CVE-2019-14789 medium The Custom 404 Pro plugin 3.2.8 for WordPress has XSS via the wp-admin/admin.php?page=c4p- same package: custom-404-pro (WordPress plugin)
CVE-2019-15838 medium The custom-404-pro plugin before 3.2.8 for WordPress has reflected XSS, a different vulner same package: custom-404-pro (WordPress plugin)
CVE-2023-0385 medium The Custom 404 Pro plugin for WordPress is vulnerable to Cross-Site Request Forgery in ver same package: custom-404-pro (WordPress plugin)
CVE-2023-6553 critical The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all ve also from 2023
CVE-2023-0315 high Froxlor vulnerable to Command Injection also from 2023