CVE-2026-2518: Wpxpo Fastx

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The FastX theme for WordPress is vulnerable to unauthorized limited plugin installation and activation due to missing capability checks on the 'ultp_install_callback' and 'ultp_activate_callback' functions in all versions up to, and including, 1.0.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate the PostX plugin.

Affected products

• Wpxpo Fastx: up to and including 1.0.2

Published 2026-05-22. Last modified 2026-07-23.