harttle LiquidJS up to 10.27.1 Join Filter src/filters/array.ts resource consumption

Summaryinfo

A vulnerability categorized as problematic has been discovered in harttle LiquidJS up to 10.27.1. Affected is an unknown function of the file src/filters/array.ts of the component Join Filter. Executing a manipulation can lead to resource consumption. This vulnerability is handled as CVE-2026-69222. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in harttle LiquidJS up to 10.27.1. This vulnerability affects an unknown functionality of the file src/filters/array.ts of the component Join Filter. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.27.2, the join filter in src/filters/array.ts computes complexity from array.length and separator length instead of the total string length produced by array.join(sep). The concat filter can cheaply double arrays of references, after which join materializes the referenced content while charging only for element count, allowing a template to exceed a configured memoryLimit by a large factor. The sibling array_to_sentence_string filter in src/filters/string.ts has the same accounting defect, and a crafted template can allocate toward V8's string or process memory limit and crash the process. This issue is fixed in version 10.27.2.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-69222 since 08/03/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 10.27.2 eliminates this vulnerability.

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Productinfo

Vendor

• harttle

Name

• LiquidJS

Version

• 10.27.0
• 10.27.1

Website

• Product: https://github.com/harttle/liquidjs/

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