CVE-2025-9561CWE-434unrestricted-file-upload

CVE-2025-9561

High · published October 3, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
49.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00631 · 49.6th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2025-10-03T16:15Z
References (3)
https://plugins.trac.wordpress.org/browser/ap-background/tags/3.8.2/includes/functions.admin.php · [email protected]https://wordpress.org/plugins/ap-background/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/e4045a2b-2bbc-4335-b6d2-af7a046f1f92?source=cve · [email protected]
EPSS history
Timeline
  • 03 OCT 11:17Z
    AP Background 3.8.1 - 3.8.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary File Upload via advParallaxBackAdminSaveSlider Function
    cvelistv5