PLUGIN SECURITY
Is Wp Smushit safe?
Compress and optimize images, enable lazy load, serve WebP & AVIF, and speed up your site with a global image CDN.
What this plugin does
- Slug:
wp-smushit - Author: WPMU DEV - Your All-in-One WordPress Platform
- 1000000+ active installs
- 96/100 rating (6051 reviews on wordpress.org)
- 68992815 all-time downloads
- On WordPress.org since 2008-12-05
compress imagesconvert webpimage optimizationimage optimizeroptimize images
Maintenance status
- Latest known version: 4.2.0
- Last updated: 2026-08-24 8:50am GMT
- Tested up to WordPress: 7.1
- Requires PHP: 7.4+
- Max supported PHP (analyzed): <8.0
Known vulnerabilities
6 known CVEs on file for Wp Smushit. Reported between 2017 and 2026.
| CVE | Vulnerability | Type | Severity | Affected | Fixed in | Published | Status |
|---|---|---|---|---|---|---|---|
| CVE-2026-81285 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 4.3.0 | Allocation of Resources Without Limits or Throttling | High 7.5 | < 4.3.0 | 4.3.0 | 2026-08-28 | ⚠ update needed |
| CVE-2026-19223 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 4.3.2 | Improper Control of Generation of Code ('Code Injection') | Unknown | < 4.3.2 | 4.3.2 | 2026-08-27 | ⚠ update needed |
| CVE-2025-22288 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.17.1 | Path Traversal: '.../...//' | Medium 4.1 | < 3.17.1 | 3.17.1 | 2025-03-29 | ✓ fixed in latest |
| CVE-2023-3352 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.16.5 | Missing Authorization | Medium 4.3 | < 3.16.5 | 3.16.5 | 2024-06-20 | ✓ fixed in latest |
| CVE-2022-1009 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.9.9 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.1 | < 3.9.9 | 3.9.9 | 2022-05-03 | ✓ fixed in latest |
| — | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.0.0 | — | Unknown | < 3.0.0 | 3.0.0 | 2018-12-10 | ✓ fixed in latest |
| — | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.0.1 | — | Unknown | < 3.0.1 | 3.0.1 | 2018-12-10 | ✓ fixed in latest |
| — | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.0.0 | — | Unknown | < 3.0.0 | 3.0.0 | 2018-12-10 | ✓ fixed in latest |
+ 4 more known vulnerabilities
| CVE | Vulnerability | Type | Severity | Affected | Fixed in | Published | Status |
|---|---|---|---|---|---|---|---|
| — | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 2.7.6 | — | Unknown | < 2.7.6 | 2.7.6 | 2017-10-09 | ✓ fixed in latest |
| CVE-2017-15079 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 2.7.6 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | High 7.5 | < 2.7.6 | 2.7.6 | 2017-09-21 | ✓ fixed in latest |
| — | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN [wp-smushit] < 3.9.9 | — | Unknown | < 3.9.9 | 3.9.9 | — | ✓ fixed in latest |
| — | Smush Image Compression and Optimization < 3.0.0 - Authenticated Phar Deserialization | — | Unknown | < 3.0.0 | 3.0.0 | — | ✓ fixed in latest |
How to fix it
Keep Wp Smushit updated — 4.2.0 is the latest version on wordpress.org, and each CVE above lists the exact release that fixed it ("Fixed in").
This is the plugin's full known vulnerability history, not a scan of any specific installation — run a free scan of your own site to check your exact installed version.
Safer / more established alternatives
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Check your own WordPress site
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