CVE-2026-19223: Unknown Smush

High severity, CVSS 7.2. EPSS: 0.4% chance of exploitation in the next 30 days.

The Smush WordPress plugin before 4.3.2 does not restrict a network-wide setting to network administrators, allowing an administrator of any single site on a multisite network to execute arbitrary code across the entire network.

Affected products

• Unknown Smush: from 3.22.1, before 4.3.2 (fixed in 4.3.2)

Published 2026-08-27. Last modified 2026-08-28.