CVE-2026-55575: Harttle Liquidjs

High severity, CVSS 8.2. EPSS: 0.5% chance of exploitation in the next 30 days.

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.27.1, the pop array filter at src/filters/array.ts allocated a full clone of its input array via [...toArray(v)] without calling this.context.memoryLimit.use(...), allowing a template render such as {{ huge_array | pop }} to allocate an O(N) clone of an attacker-influenced array outside the configured memoryLimit budget. This issue is fixed in version 10.27.1.

Affected products

• Harttle Liquidjs: before 10.27.1 (fixed in 10.27.1)

Published 2026-07-08. Last modified 2026-07-10.