CVE-2015-9364: 2checkout Ithemes 2checkout

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

2Checkout Add-on for iThemes Exchange before 1.1.0 for WordPress has XSS via add_query_arg() and remove_query_arg().

Affected products

• 2checkout Ithemes 2checkout: before 1.1.0 (fixed in 1.1.0)

Published 2019-08-28. Last modified 2026-06-17.