Vulnerability-Lookup

CVE-2026-35525 (GCVE-0-2026-35525)

Vulnerability from cvelistv5 – Published: 2026-04-08 19:30 – Updated: 2026-04-08 19:53

Title

LiquidJS has a root restriction bypass for partial and layout loading through symlinked templates

Summary

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.

Severity

8.2 (High)


                        
                          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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/harttle/liquidjs/security/advi…	x_refsource_CONFIRM
https://github.com/harttle/liquidjs/pull/867	x_refsource_MISC
https://github.com/harttle/liquidjs/releases/tag/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
harttle	liquidjs	Affected: < 10.25.3

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-35525

Vulnerability from fkie_nvd - Published: 2026-04-08 20:16 - Updated: 2026-06-17 10:40

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/harttle/liquidjs/pull/867	Issue Tracking
security-advisories@github.com	https://github.com/harttle/liquidjs/releases/tag/v10.25.3	Release Notes
security-advisories@github.com	https://github.com/harttle/liquidjs/security/advisories/GHSA-56p5-8mhr-2fph	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	liquidjs	liquidjs	*

JSON

To clipboard

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    }
  ],
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    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-56p5-8mhr-2fph"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-61"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-56P5-8MHR-2FPH

Vulnerability from github – Published: 2026-04-08 15:03 – Updated: 2026-04-10 21:34

Summary

LiquidJS: Root restriction bypass for partial and layout loading through symlinked templates

Details

Summary

LiquidJS enforces partial and layout root restrictions using the resolved pathname string, but it does not resolve the canonical filesystem path before opening the file. A symlink placed inside an allowed partials or layouts directory can therefore point to a file outside that directory and still be loaded.

Details

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.

PoC

const { Liquid } = require('liquidjs');
const fs = require('fs');

fs.rmSync('/tmp/liquid-root', { recursive: true, force: true });
fs.mkdirSync('/tmp/liquid-root', { recursive: true });

fs.writeFileSync('/tmp/secret-outside.liquid', 'SECRET_OUTSIDE');
fs.symlinkSync('/tmp/secret-outside.liquid', '/tmp/liquid-root/link.liquid');

const engine = new Liquid({ root: ['/tmp/liquid-root'] });

engine.parseAndRender('{% render "link.liquid" %}')
  .then(console.log);
// SECRET_OUTSIDE

Impact

If an attacker can place or influence symlinks under a trusted partials or layouts directory, they can make LiquidJS read and render files outside the intended template root. In practice this can expose arbitrary readable files reachable through symlink targets.

Severity

7.5 (High)


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

8.2 (High)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.25.2"
      },
      "package": {
        "ecosystem": "npm",
        "name": "liquidjs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "10.25.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35525"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-61"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-08T15:03:47Z",
    "nvd_published_at": "2026-04-08T20:16:24Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nLiquidJS enforces partial and layout root restrictions using the resolved pathname string, but it does not resolve the canonical filesystem path before opening the file. A symlink placed inside an allowed partials or layouts directory can therefore point to a file outside that directory and still be loaded.\n\n### Details\n\nFor `{% 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.\n\nBecause 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.\n\nSo the restriction is applied to the path string that was requested, not to the file that is actually read.\n\nThis 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.\n\n### PoC\n\n```js\nconst { Liquid } = require(\u0027liquidjs\u0027);\nconst fs = require(\u0027fs\u0027);\n\nfs.rmSync(\u0027/tmp/liquid-root\u0027, { recursive: true, force: true });\nfs.mkdirSync(\u0027/tmp/liquid-root\u0027, { recursive: true });\n\nfs.writeFileSync(\u0027/tmp/secret-outside.liquid\u0027, \u0027SECRET_OUTSIDE\u0027);\nfs.symlinkSync(\u0027/tmp/secret-outside.liquid\u0027, \u0027/tmp/liquid-root/link.liquid\u0027);\n\nconst engine = new Liquid({ root: [\u0027/tmp/liquid-root\u0027] });\n\nengine.parseAndRender(\u0027{% render \"link.liquid\" %}\u0027)\n  .then(console.log);\n// SECRET_OUTSIDE\n```\n\n### Impact\n\nIf an attacker can place or influence symlinks under a trusted partials or layouts directory, they can make LiquidJS read and render files outside the intended template root. In practice this can expose arbitrary readable files reachable through symlink targets.",
  "id": "GHSA-56p5-8mhr-2fph",
  "modified": "2026-04-10T21:34:31Z",
  "published": "2026-04-08T15:03:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-56p5-8mhr-2fph"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35525"
    },
    {
      "type": "WEB",
      "url": "https://github.com/harttle/liquidjs/pull/867"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/harttle/liquidjs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/harttle/liquidjs/releases/tag/v10.25.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LiquidJS: Root restriction bypass for partial and layout loading through symlinked templates"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-35525 (GCVE-0-2026-35525)

FKIE_CVE-2026-35525

GHSA-56P5-8MHR-2FPH

Summary

Details

PoC

Impact

Tags

Sightings

Nomenclature