TenWeb Speed Optimizer <= 2.33.4 - Unauthenticated Stored Cross-Site Scripting

7.2
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-14287
CVSS 7.2 (High)
Publicly Published August 17, 2026
Last Updated August 20, 2026
Researcher Jakub Herman

Description

The TenWeb Speed Optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.33.4. This is 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.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for 10Web Booster – Website speed optimization, Cache & Page Speed optimizer

Software Type Plugin
Software Slug tenweb-speed-optimizer (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.33.5, or a newer patched version
Affected Version
  • <= 2.33.4
Patched Version
  • 2.33.5

Recent vulnerabilities in 10Web Booster – Website speed optimization, Cache & Page Speed optimizer

# Title CVE ID CVSS Researchers Date
1 10Web Booster <= 2.32.7 - Authenticated (Subscriber+) Arbitrary Folder Deletion via two_clear_page_cache CVE-2025-13377 9.6 shark3y December 5, 2025
2 10Web Booster <= 2.24.14 - Unauthenticated Arbitrary Option Deletion CVE-2023-5559 6.5 Krzysztof Zając October 29, 2023
3 10Web Booster – Website speed optimization, Cache & Page Speed optimizer <= 2.13.44 - Missing Authorization in Settings Import to Stored Cross-Site Scripting 7.2 February 21, 2023
4 10Web Booster – Website speed optimization, Cache & Page Speed optimizer <= 2.12.23 - Unauthenticated SQL Injection 8.8 January 25, 2023
5 10Web Booster – Website speed optimization, Cache & Page Speed optimizer <= 2.8.34 - Missing Authorization to Plugin Deactivation 5.4 November 19, 2022

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