Known vulnerabilities in Image Optimization – Compress Images and Convert to WebP or AVIF

Automatically resize, optimize, and convert images to WebP and AVIF. Compress images in bulk or on upload to boost your WordPress site performance.

2Reported vulnerabilities

8.1Highest CVSS score

1.7.6Latest version

1,000,000+Active installs

What to do now

Update Image Optimization – Compress Images and Convert to WebP or AVIF to 1.7.5 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 7, 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-2026-5821	High 8.1	0.7%	0 to 1.7.4 (inclusive)	`1.7.5`	July 2, 2026
CVE-2026-25387	Medium 4.3	0.3%	1.7.1 and earlier	`1.7.2`	February 20, 2026

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