CVE-2025-9561HIGH 8.8EPSS p42.9%

CVE-2025-9561CVE-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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.57% probability of exploitation · percentile 42.9% · 2026-06-19T12:03:05Z
Published2025-10-03
Last modified2026-04-15

Underlying weaknesses· 1

CWE-434

References

  1. https://plugins.trac.wordpress.org/browser/ap-background/tags/3.8.2/includes/functions.admin.php
  2. https://wordpress.org/plugins/ap-background/
  3. https://www.wordfence.com/threat-intel/vulnerabilities/id/e4045a2b-2bbc-4335-b6d2-af7a046f1f92?source=cve

1

TypeTargetConfidenceTier
WeaknessUnrestricted Upload of File with Dangerous Typecwe-4340%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2025-12161
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CVE-2025-13543
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CVE-2025-2006
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CVE-2025-12154
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.