AP Background 3.8.1 - 3.8.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary File Upload via advParallaxBackAdminSaveSlider Function
| CVE | CVE-2025-9561 |
|---|---|
| CVSS | 8.8 (High) |
| Publicly Published | October 2, 2025 |
| Last Updated | October 3, 2025 |
| Researcher |
kr0d
|
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.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
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Vulnerability Details for AP Background
| Software Type | Plugin |
|---|---|
| Software Slug | ap-background (view on wordpress.org) |
| Patched? | No |
| Remediation | No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. |
| Affected Version |
|
Recent vulnerabilities in AP Background
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | AP Background <= 3.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting | CVE-2025-10165 | zaim | October 2, 2025 | |
| 2 | AP Background <= 3.8.2 - Cross-Site Request Forgery | CVE-2025-9897 | Nabil Irawan | October 2, 2025 |
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