Vulnerability · Published Apr 8, 2026 · Assigned by GitHub_M
CVE-2026-35525LiquidJS has a root restriction bypass for partial and layout loading through symlinked templates
High 8.2
In plain English
A high-severity security flaw in liquidjs from harttle. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, for {% include %}, {% render %}, and {% layout %}, LiquidJS checks whether the candidate path is inside the configured partials or layouts roots before reading it. That check is path-based, not realpath-based. Because of that, a file like partials/link.liquid passes the directory containment check as long as its pathname is under the allowed root. If link.liquid is actually a symlink to a file outside the allowed root, the filesystem follows the symlink when the file is opened and LiquidJS renders the external target. So the restriction is applied to the path string that was requested, not to the file that is actually read. This matters in environments where an attacker can place templates or otherwise influence files under a trusted template root, including uploaded themes, extracted archives, mounted content, or repository-controlled template trees. This vulnerability is fixed in 10.25.3.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | liquidjs | 10.25.3 | GHSA-56p5-8mhr-2fph |
Affected products (as reported)
Weakness: CWE-61 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/harttle/liquidjs/security/advisories/GHSA-56p5-8mhr-2fph x_refsource_CONFIRM
- https://github.com/harttle/liquidjs/pull/867 x_refsource_MISC
- https://github.com/harttle/liquidjs/releases/tag/v10.25.3 x_refsource_MISC