Smush – Lazy Load Images, Optimize & Compress Images <= 2.9.1 - Cross-Site Scripting

9.8
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 9.8 (Critical)
Publicly Published December 10, 2018
Last Updated December 5, 2022

Description

The Smush – Lazy Load Images, Optimize & Compress Images plugin for WordPress is vulnerable to Cross-Site Scripting leading in versions up to, and including, 2.9.1 due to insufficient input sanitization and output escaping. This makes it possible for attackers to inject malicious web scripts into the application.

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

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Vulnerability Details for Smush – Image Optimization, Compression, Lazy Load, WebP & CDN

Software Type Plugin
Software Slug wp-smushit (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.0.0, or a newer patched version
Affected Version
  • <= 2.9.1
Patched Version
  • 3.0.0

Recent vulnerabilities in Smush – Image Optimization, Compression, Lazy Load, WebP & CDN

# Title CVE ID CVSS Researchers Date
1 Smush – Image Optimization, Compression, Lazy Load, WebP & CDN <= 4.2.0 - Unauthenticated Denial of Service CVE-2026-81285 7.5 Asim Alshaya August 27, 2026
2 Smush – Image Optimization, Compression, Lazy Load, WebP & CDN < 4.3.2 - Authenticated (Administrator+) Remote Code Execution CVE-2026-19223 7.2 Jakub Herman August 27, 2026
3 Smush Image Compression and Optimization <= 3.17.0 - Authenticated (Admin+) Directory Traversal CVE-2025-22288 2.7 SteveSec March 29, 2025
4 Smush – Lazy Load Images, Optimize & Compress Images <= 3.16.4 - Missing Authorization to Resmush List Deletion CVE-2023-3352 4.3 Truoc Phan, An Đặng June 20, 2024
5 Smush – Lazy Load Images, Optimize & Compress Images <= 3.9.8 - Cross-Site Scripting CVE-2022-1009 4.4 Taurus Omar May 3, 2022
6 Smush – Lazy Load Images, Optimize & Compress Images <= 3.0.0 - Authenticated PHAR Deserialization 8.8 December 10, 2018
7 Smush – Lazy Load Images, Optimize & Compress Images <= 2.7.5 - Directory Traversal CVE-2017-15079 5.3 Ricardo Sanchez September 21, 2017

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