Vulnerabilities in pkg:npm/@rhinostone/swig-core

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2mf3-mr2r-r4vf",
  "modified" : "2026-08-18T16:31:16Z",
  "published" : "2026-08-18T16:31:16Z",
  "aliases" : [ ],
  "summary" : "@rhinostone/swig: arbitrary local file read via include/extends path traversal",
  "details" : "### Overview\n\n`@rhinostone/swig` is a maintained fork of the abandoned `swig` template engine and inherited the directory-traversal vulnerability tracked upstream as CVE-2023-25345 / GHSA-2rq5-699j-x7p6. The `{% include %}`, `{% extends %}`, and `{% import %}` tags resolve their target path through the filesystem loader without confining the result to the configured template root. A path that traverses upward (`../`) escapes the root and reads an arbitrary file from the host filesystem, whose contents are emitted into the rendered output.\n\n### Attack scenario\n\nThe dangerous case does **not** require the attacker to control template source — only template **data** (the `locals` passed at render time). An application that renders a trusted template whose include / extends path is variable-driven is exposed:\n\n```js\n// application code — a configured filesystem loader with a basepath\nswig.renderFile('page.html', { partial: req.query.partial });\n```\n\n```\n{# page.html — trusted template #}\n{% include partial %}\n```\n\nSetting `?partial=../../../../etc/passwd` makes the loader resolve and read that file, and its contents are rendered into the response. A literal in trusted source is equally affected: `{% include \"../../../etc/passwd\" %}`.\n\n### Impact\n\nArbitrary local file disclosure (confidentiality). An attacker able to influence an include / extends / import path — directly, or via untrusted `locals` — can read files outside the template directory: application configuration, credentials, source code, `/etc/passwd`, and so on. There is no integrity or availability impact.\n\n### Affected & patched\n\nEvery published version up to and including `2.7.0` is affected — `@rhinostone/swig`, and the shared `@rhinostone/swig-core` loader, hence `@rhinostone/swig-twig`, `@rhinostone/swig-jinja2`, and `@rhinostone/swig-django` as well.\n\nFixed in **`2.7.1`**: the filesystem loader now rejects any `include` / `extends` / `import` path that resolves outside the configured `basepath` root, including paths supplied through an untrusted runtime variable. A new `allowOutsideRoot` loader option is available for the rare case of intentionally reading files from outside the root.\n\n**Upgrade to `2.7.2` or later:** `2.7.1` fixed the vulnerability but introduced a regression — a *relative* `basepath` wrongly rejected every in-root template path. `2.7.2` resolves the `basepath` to an absolute path before the check and restores correct in-root resolution.\n\n### Workarounds\n\n- Upgrade to `2.7.2` (or later).\n- If you cannot upgrade immediately: configure the filesystem loader with an explicit `basepath`, and never pass untrusted data into an `{% include %}` / `{% extends %}` / `{% import %}` path.\n\n### References\n\n- GHSA-2rq5-699j-x7p6 — https://github.com/advisories/GHSA-2rq5-699j-x7p6\n- CVE-2023-25345 (NVD) — https://nvd.nist.gov/vuln/detail/CVE-2023-25345\n- Upstream issue (swig-templates) — https://github.com/node-swig/swig-templates/issues/88\n- Fix commit — https://github.com/gina-io/swig/commit/381bdc305e0b10e45368d56324328b9b4f7017fc",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@rhinostone/swig"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@rhinostone/swig-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@rhinostone/swig-twig"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@rhinostone/swig-jinja2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@rhinostone/swig-django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/gina-io/swig/security/advisories/GHSA-2mf3-mr2r-r4vf"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-25345"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gina-io/swig/commit/381bdc305e0b10e45368d56324328b9b4f7017fc"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gina-io/swig"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-18T16:31:16Z",
    "nvd_published_at" : null
  }
}