GHSA-9C88-49P5-5GGF

Vulnerability from github – Published: 2026-02-18 21:51 – Updated: 2026-02-19 21:57
VLAI
Summary
Systeminformation has a Command Injection via unsanitized interface parameter in wifi.js retry path
Details

Summary

A command injection vulnerability in the wifiNetworks() function allows an attacker to execute arbitrary OS commands via an unsanitized network interface parameter in the retry code path.

Details

In lib/wifi.js, the wifiNetworks() function sanitizes the iface parameter on the initial call (line 437). However, when the initial scan returns empty results, a setTimeout retry (lines 440-441) calls getWifiNetworkListIw(iface) with the original unsanitized iface value, which is passed directly to execSync('iwlist ${iface} scan').

PoC

  1. Install systeminformation@5.30.7
  2. Call si.wifiNetworks('eth0; id')
  3. The first call sanitizes input, but if results are empty, the retry executes: iwlist eth0; id scan

Impact

Remote Code Execution (RCE). Any application passing user-controlled input to si.wifiNetworks() is vulnerable to arbitrary command execution with the privileges of the Node.js process.

Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "systeminformation"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.30.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-26280"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-18T21:51:26Z",
    "nvd_published_at": "2026-02-19T20:25:43Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nA command injection vulnerability in the `wifiNetworks()` function allows an attacker to execute arbitrary OS commands via an unsanitized network interface parameter in the retry code path.\n\n### Details\nIn `lib/wifi.js`, the `wifiNetworks()` function sanitizes the `iface` parameter on the initial call (line 437). However, when the initial scan returns empty results, a `setTimeout` retry (lines 440-441) calls `getWifiNetworkListIw(iface)` with the **original unsanitized** `iface` value, which is passed directly to `execSync(\u0027iwlist ${iface} scan\u0027)`.\n\n### PoC\n1. Install `systeminformation@5.30.7`\n2. Call `si.wifiNetworks(\u0027eth0; id\u0027)`\n3. The first call sanitizes input, but if results are empty, the retry executes: `iwlist eth0; id scan`\n\n### Impact\nRemote Code Execution (RCE). Any application passing user-controlled input to `si.wifiNetworks()` is vulnerable to arbitrary command execution with the privileges of the Node.js process.",
  "id": "GHSA-9c88-49p5-5ggf",
  "modified": "2026-02-19T21:57:02Z",
  "published": "2026-02-18T21:51:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-9c88-49p5-5ggf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26280"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sebhildebrandt/systeminformation/commit/22242aa56188f2bffcbd7d265a11e1ebb808b460"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sebhildebrandt/systeminformation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Systeminformation has a Command Injection via unsanitized interface parameter in wifi.js retry path"
}



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