Improperly Implemented Security Check for Standard Affecting liquidjs package, versions <10.25.4
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-LIQUIDJS-15930991
- published8 Apr 2026
- disclosed8 Apr 2026
- creditByunSuyoung
Introduced: 8 Apr 2026
CVE-2026-39412 (opens in a new tab)How to fix?
Upgrade liquidjs to version 10.25.4 or higher.
Overview
liquidjs is an A simple, expressive, safe and Shopify compatible template engine in pure JavaScript.
Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard via the sort_natural and sort filters, which bypass the iownPropertyOnly security option by accessing prototype-inherited properties even when a security option is enabled. An attacker can extract sensitive information from prototype properties by manipulating the sorting process to reveal the values through side-channel analysis.