---
id: CVE-2026-103896
title: >-
  10Web Booster <= 2.34.5 - Unauthenticated Limited File Write / Cache Poisoning
  via Query-string Parameter Traversal in Page-Cache Path
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'
cvssSource: cna
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
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T14:55:48.533241Z'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:09:39.142Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-103896'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/83e672e7-2483-46e9-ae16-a9e7ccc4bcb8?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L205
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L190
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageCache.php#L312
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/includes/WebPageCache/OptimizerWebPageValidations.php#L299
  - url: >-
      https://plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.8
tags:
  - cve.org
epss: 0.00464
epssPercentile: 0.38752
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.

## Affected

- `booster_website_speed_optimization_cache_page_speed_optimizer <= 2.34.5`

## Remediation

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