What is CVE-2026-39859?

CVE-2026-39859 is a high-severity vulnerability in Harttle Liquidjs, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-04-08.

How severe is CVE-2026-39859?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Harttle Liquidjs

CVE-2026-39859

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, liquidjs 10.25.0 documents root as constraining filenames passed to renderFile() and parseFile(), but top-level file loads do not enforce…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.004 (36.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Harttle Liquidjs — versions < 10.25.3
Liquidjs

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-39859?: CVE-2026-39859 is a high-severity vulnerability in Harttle Liquidjs, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-04-08.
How severe is CVE-2026-39859?: High severity. CVSS v3 base score is 7.5 out of 10.