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Vulnerability record · CVE-2026-39412 · published 8 April 2026

CVE-2026-39412: Liquidjs information exposure vulnerability

Liquidjs · Liquidjs

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.4, the sort_natural filter bypasses the ownPropertyOnly security option, allowing template authors to extract values of prototype-inherited properties through a sorting side-channel attack. Applications relying on ownPropertyOnly: true as a security boundary (e.g., multi-tenant template systems) are exposed to information disclosure of sensitive prototype properties such as API keys and tokens. This vulnerability is fixed in 10.25.4.

7.5 CVSS 3.1 High EPSS 0.47% · top 61.5% CWE-200 · Information exposure
7.5CVSS 3.1 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 2 tagged exploit
24 Jul 2026Last modified by NVD

Description

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.4, the sort_natural filter bypasses the ownPropertyOnly security option, allowing template authors to extract values of prototype-inherited properties through a sorting side-channel attack. Applications relying on ownPropertyOnly: true as a security boundary (e.g., multi-tenant template systems) are exposed to information disclosure of sensitive prototype properties such as API keys and tokens. This vulnerability is fixed in 10.25.4.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/harttle/liquidjs/commit/e743da0020d34e2ee547e1cc1a86b58377ebe1ce Patch
https://github.com/harttle/liquidjs/pull/869 Issue TrackingProduct
https://github.com/harttle/liquidjs/releases/tag/v10.25.4 Release Notes
https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv ExploitVendor Advisory
https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-39412), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.