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

Compress and optimize images, enable lazy load, serve WebP & AVIF, and speed up your site with a global image CDN.

7Reported vulnerabilities

9.8Highest CVSS score

4.3.0Latest version

1,000,000+Active installs

What to do now

Update Smush – Image Optimization, Compression, Lazy Load, WebP & CDN to 4.3.2 or later. 7 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 10, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
WF-53b5a052-6e84-4eb5-a7f4-4e32f757f4d6	Critical 9.8	—	2.9.1 and earlier	`3.0.0`	December 10, 2018
WF-15654ff3-2e61-44d2-ae3f-4a353db320cb	High 8.8	—	3.0.0 and earlier	`3.0.1`	December 10, 2018
CVE-2017-15079	High 7.5	2.5%	2.7.5 and earlier	`2.7.6`	October 6, 2017
CVE-2026-81285	High 7.5	0.3%	4.2.0 and earlier	`4.3.0`	August 27, 2026
CVE-2026-19223	High 7.2	0.4%	Before 4.3.2	`4.3.2`	August 27, 2026
CVE-2023-3352	Medium 4.3	0.3%	0 to 3.16.4 (inclusive)	`3.16.5`	June 21, 2024
CVE-2025-22288	Medium 4.1	0.3%	0 to 3.17.0 (inclusive)	`3.17.1`	November 6, 2025

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.