What’s Vulnerable › Vulnerabilities

CVE-2026-41311: LiquidJS is vulnerable to Denial of Service via circular block reference in layout

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-09 · updated 2026-07-24
• Weakness: CWE-674

Description

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.7, a circular block reference in {% layout %} / {% block %} causes an infinite recursive loop, consuming all available memory (~4GB) and crashing the Node.js process with FATAL ERROR: JavaScript heap out of memory. This allows any user who can submit a Liquid template to perform a Denial of Service attack. This issue has been patched in version 10.25.7.

Affected products

• harttle liquidjs: before 10.25.7 — fixed in 10.25.7

How to fix

Upgrade to a fixed version: harttle liquidjs 10.25.7. Check the vendor advisory for mitigations.

References

• https://github.com/harttle/liquidjs/commit/e2311dfd6e82f73509308aa8a3a1fafc92e226f0
• https://github.com/harttle/liquidjs/releases/tag/v10.25.7
• https://github.com/harttle/liquidjs/security/advisories/GHSA-4rc3-7j7w-m548
• https://github.com/harttle/liquidjs/security/advisories/GHSA-4rc3-7j7w-m548

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