---
id: CVE-2025-10165
title: >-
  The AP Background plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the plugin's 'adv_parallax_back' shortcode in all versions up
  to, and including, 3.8.2 due to insufficient input sanitization and output
  escaping on …
summary: >-
  The AP Background plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the plugin's 'adv_parallax_back' shortcode in all versions up
  to, and including, 3.8.2 due to insufficient input sanitization and output
  escaping on …
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2025-10-03'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T23:10:00.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-10165'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ap-background/trunk/includes/shortCodeClass.php#L44
    label: security@wordfence.com
  - url: 'https://wordpress.org/plugins/ap-background'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/f98b848c-9f97-4d00-97de-7651b9035731?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00231
epssPercentile: 0.12827
ingestedAt: '2026-10-08T23:16:47.366Z'
---

## Overview

The AP Background plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'adv_parallax_back' shortcode in all versions up to, and including, 3.8.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.