Known vulnerabilities in ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF

Optimize images & PDFs smartly. Create and compress next-gen WebP and AVIF formats. Smart crop and resize.

8Reported vulnerabilities

7.5Highest CVSS score

6.5.5Latest version

300,000+Active installs

What to do now

Update ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF to 6.4.4 or later. 8 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 21, 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
CVE-2026-39471	High 7.5	0.4%	6.4.3 and earlier	`6.4.4`	April 20, 2026
WF-9f23bf62-6008-4a9c-a7ae-a2e513699684	Medium 6.6	—	Before 5.4.2	`5.4.2`	September 14, 2023
WF-7f9b86a3-c68a-443f-a2f3-5f31f3280a6f	Medium 6.1	—	4.22.9 and earlier	`4.22.10`	June 2, 2022
CVE-2025-11378	Medium 5.4	0.3%	6.3.4 and earlier	`6.3.5`	October 17, 2025
CVE-2026-4335	Medium 5.4	0.2%	0 to 6.4.3 (inclusive)	`6.4.4`	March 26, 2026
CVE-2026-1246	Medium 4.9	0.5%	0 to 6.4.2 (inclusive)	`6.4.3`	February 5, 2026
CVE-2024-48043	Medium 4.9	0.4%	5.6.3 and earlier	`5.6.4`	October 13, 2024
CVE-2024-48044	Medium 4.3	0.4%	5.6.3 and earlier	`5.6.4`	October 13, 2024

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