What is CVE-2025-9561?

CVE-2025-9561 is a high-severity vulnerability in Hovanesvn Ap Background, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2025-10-03.

How severe is CVE-2025-9561?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2025-9561 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Hovanesvn Ap Background

CVE-2025-9561

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.

Vulnerability class: Unrestricted File Upload

EPSS: 0.006 (45.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Hovanesvn Ap Background — versions 3.8.1

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-9561?: CVE-2025-9561 is a high-severity vulnerability in Hovanesvn Ap Background, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2025-10-03.
How severe is CVE-2025-9561?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-9561 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.