High severity8.8NVD Advisory· Published Oct 3, 2025· Updated Apr 15, 2026

CVE-2025-9561

Description

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

WordPress/Ap Backgroundreferences
Package: https://wordpress.org/plugins/ap-background

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

plugins.trac.wordpress.org/browser/ap-background/tags/3.8.2/includes/functions.admin.phpnvd
wordpress.org/plugins/ap-background/nvd
www.wordfence.com/threat-intel/vulnerabilities/id/e4045a2b-2bbc-4335-b6d2-af7a046f1f92nvd

News mentions

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