CVE-2026-13153: Unknown Gutenberg Essential Blocks

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

The Gutenberg Essential Blocks WordPress plugin before 6.4.0 does not restrict access to one of its public REST routes and over-fetches a non-public WooCommerce per-product sales metric into the response, allowing unauthenticated users to read the lifetime number of units sold for any published product.

Affected products

• Unknown Gutenberg Essential Blocks: before 6.4.0 (fixed in 6.4.0)

Published 2026-08-06. Last modified 2026-08-26.