CVE-2026-39859

LiquidJS has a renderFile() / parseFile() bypass configured root and allow arbitrary file read

HIGH
7.5
CVSS Score
Published: April 8, 2026 at 07:45 PM UTC
Updated: July 24, 2026 at 09:20 PM UTC
2 products affected across 2 vendorsLiquidjsLiquidjs

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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 that boundary. A Liquid instance configured with an empty temporary directory as root can return the contents of arbitrary files. This vulnerability is fixed in 10.25.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 10.25.3
Affected range stops below 10.25.3, so it looks safe — our inference, not a vendor statement
v < 10.25.3
Affected range stops below 10.25.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/harttle/liquidjs/security/advisories/GHSA-v273-448j-v4qj

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-22

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