CVE-2026-39412

Name: CVE-2026-39412
Creator: NVD / NIST
Published: 2026-04-08T20:16:25.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2026-39412 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.40%

32.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Liquidjs	Liquidjs	< 10.25.4

References

https://github.com/harttle/liquidjs/commit/e743da0020d34e2ee547e1cc1a86b58377ebe1cePatch
https://github.com/harttle/liquidjs/pull/869Issue Tracking, Product
https://github.com/harttle/liquidjs/releases/tag/v10.25.4Release Notes
https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvvExploit, Vendor Advisory
https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvvExploit, Vendor Advisory

Timeline

Published: Apr 8, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-39412?

How severe is CVE-2026-39412?

CVE-2026-39412 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-39412?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-39412?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST