---
id: CVE-2026-13354
title: >-
  The Asset CleanUp: Page Speed Booster plugin for WordPress is vulnerable to
  Stored Cross-Site Scripting via Comment Content in all versions up to, and
  including, 1.4.0.5 due to insufficient input sanitization and output escaping
summary: >-
  The Asset CleanUp: Page Speed Booster plugin for WordPress is vulnerable to
  Stored Cross-Site Scripting via Comment Content in all versions up to, and
  including, 1.4.0.5 due to insufficient input sanitization and output escaping.
  This ma…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: gabelivan
product: 'Asset CleanUp: Page Speed Booster'
affected:
  - asset_cleanup_page_speed_booster <= 1.4.0.5
published: '2026-09-19'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T13:33:33.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13354'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.3/classes/OptimiseAssets/OptimizeCss.php#L579
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.3/classes/OptimiseAssets/OptimizeJs.php#L824
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.4/classes/OptimiseAssets/OptimizeCss.php#L579
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.4/classes/OptimiseAssets/OptimizeJs.php#L824
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3699024%40wp-asset-clean-up&new=3699024%40wp-asset-clean-up
    label: security@wordfence.com
  - url: 'https://research.cleantalk.org/cve-2026-13354'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/4cc8ec2b-f203-4c7c-8720-043f8634a447?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00241
epssPercentile: 0.13603
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-19T13:20:23.438548Z'
ingestedAt: '2026-09-19T02:56:32.977Z'
---

## Overview

The Asset CleanUp: Page Speed Booster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 1.4.0.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable on instances where combine_loaded_css has been enabled.

## Remediation

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