CVE-2013-4339: WordPress

High severity, CVSS 7.5. EPSS: 7.6% chance of exploitation in the next 30 days.

WordPress before 3.6.1 does not properly validate URLs before use in an HTTP redirect, which allows remote attackers to bypass intended redirection restrictions via a crafted string.

Affected products

• WordPress WordPress: up to and including 3.6

Published 2013-09-12. Last modified 2026-06-16.