BREW-ZX-CVE-2025-13437 (GHSA-W87R-VG9Q-CRQM)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:55 – Updated: 2026-09-17 19:30 – Source website
VLAI
Summary
zx Uses Incorrectly-Resolved Name or Reference
Details

When zx is invoked with --prefer-local=, the CLI creates a symlink named ./node_modules pointing to /node_modules. Due to a logic error in src/cli.ts (linkNodeModules / cleanup), the function returns the target path instead of the alias (symlink path). The later cleanup routine removes what it received, which deletes the target directory itself. Result: zx can delete an external /node_modules outside the current working directory.

Severity
5.6 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/E:U
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "8.8.5"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "zx",
        "purl": "pkg:brew/zx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.4"
            },
            {
              "fixed": "8.8.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "npm",
        "key": "pkg:npm/zx@8.8.5",
        "name": "zx",
        "strategy": "registry",
        "subject_version": "8.8.5"
      }
    ]
  },
  "details": "When zx is invoked with --prefer-local=\u003cpath\u003e, the CLI creates a symlink named ./node_modules pointing to \u003cpath\u003e/node_modules. Due to a logic error in src/cli.ts (linkNodeModules / cleanup), the function returns the target path instead of the alias (symlink path). The later cleanup routine removes what it received, which deletes the target directory itself. Result: zx can delete an external \u003cpath\u003e/node_modules outside the current working directory.",
  "id": "BREW-zx-CVE-2025-13437",
  "modified": "2026-09-17T19:30:03Z",
  "published": "2026-08-13T17:55:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13437"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/zx/issues/1348"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/zx/pull/1349"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/zx/pull/1355"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/zx/commit/9ef6d3c9962c4ba01e3fb8075855570c192b4681"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/zx/commit/a4d1bc2467f305f1c91d62506e215f307dc1fbeb"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/google/zx"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "zx Uses Incorrectly-Resolved Name or Reference",
  "upstream": [
    "GHSA-w87r-vg9q-crqm",
    "CVE-2025-13437"
  ]
}



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