CVE-2025-9561: Hovanesvn Ap Background

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The AP Background plugin for WordPress is vulnerable to arbitrary file uploads due to missing authorization and insufficient file validation within the advParallaxBackAdminSaveSlider() handler in versions 3.8.1 to 3.8.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Affected products

• Hovanesvn Ap Background: from 3.8.1, up to and including 3.8.2

Published 2025-10-03. Last modified 2026-10-08.