---
id: CVE-2026-103896
title: >-
  The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer
  plugin for WordPress is vulnerable to a limited file write via path traversal
  in versions up to, and including, 2.34.5 This is due to the
  OptimizerWebPageCache:…
summary: >-
  The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer
  plugin for WordPress is vulnerable to a limited file write via path traversal
  in versions up to, and including, 2.34.5 This is due to the
  OptimizerWebPageCache:…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-22
vendor: 10web
product: '10Web Booster – Website speed optimization, Cache & Page Speed optimizer'
affected:
  - booster_website_speed_optimization_cache_page_speed_optimizer <= 2.34.5
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:17:02.663'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103896'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L190
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L205
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L312
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageValidations.php#L299
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.8
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/83e672e7-2483-46e9-ae16-a9e7ccc4bcb8?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00464
epssPercentile: 0.40016
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T14:55:48.533241Z'
ingestedAt: '2026-10-16T06:00:00.391Z'
---

## Overview

The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to a limited file write via path traversal in versions up to, and including, 2.34.5 This is due to the OptimizerWebPageCache::get_cache_file_dir() function concatenating raw, unsanitized $_GET parameter names and values into the on-disk cache path, and the cache_content() sink calling mkdir() and file_put_contents() on the result with no realpath containment check — unlike the sibling delete_page_cache(), which does perform one. This makes it possible for unauthenticated attackers to create arbitrary directories (mode 0777, recursively) outside the cache root and write a cached page into them. The write is LIMITED: the filename is always 'source.html', so the extension is fixed, and the content is the rendered page buffer rather than attacker-supplied data. PHP files cannot be written and code execution is not possible; the demonstrated impact is cache poisoning and arbitrary directory creation.

## Remediation

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