CVE-2016-2222: WordPress

High severity, CVSS 8.6. EPSS: 7.9% chance of exploitation in the next 30 days.

The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request forgery (SSRF) attacks via a zero value in the first octet of an IPv4 address in the u parameter to wp-admin/press-this.php.

Affected products

• WordPress WordPress: version 4.4.1 only

Published 2016-05-22. Last modified 2026-06-17.