CVE-2026-26280: Systeminformation Systeminformation Has A Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-9c88-49p5-5ggf
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CVSS 8.4
CWE-78
Published
Advisory Summary

CVE-2026-26280 is a HIGH (CVSS 8.4) systeminformation has a command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Systeminformation libraries in the npm ecosystem. The issue involves systeminformation has a command injection via unsanitized interface parameter in wifi.js retry path. Remediation is available by upgrading affected packages to version 5.30.8.

CVE-2026-26280 at a Glance

CVE Identifier CVE-2026-26280
GHSA Identifier GHSA-9c88-49p5-5ggf
Severity HIGH
CVSS v3.1 Base Score 8.4
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Systeminformation
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-26280

To remediate this vulnerability, upgrade all affected Systeminformation dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

systeminformation fixed: 5.30.8 
npm install systeminformation@5.30.8
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls systeminformation

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-26280, inspect your project dependencies using npm:

npm ls systeminformation

Analyze the terminal output to locate any version of Systeminformation in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.30.8), your application is affected.

Note: The npm ls systeminformation command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Systeminformation, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2026-26280 Affected Systeminformation Versions

1 component(s)
Fixed Versions:
5.30.8
Product / Package Ecosystem Affected Versions Fixed Version
systeminformation
npm/systeminformation
npm
< 5.30.8
5.30.8

References

GitHub Advisory / Wiki ADVISORY
https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-9c88-49p5-5ggf
NVD — CVE-2026-26280 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26280
Security Fix Commit FIX COMMIT
https://github.com/sebhildebrandt/systeminformation/commit/22242aa56188f2bffcbd7d265a11e1ebb808b460
Systeminformation Source Repository REPOSITORY
https://github.com/sebhildebrandt/systeminformation

Frequently Asked Questions

What is CVE-2026-26280?
CVE-2026-26280 is a security vulnerability in Systeminformation involving Systeminformation has a Command Injection via unsanitized interface parameter in wifi.js retry path under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Systeminformation versions are affected?
Affected versions include releases prior to 5.30.8 across affected packages: systeminformation.
What version fixes CVE-2026-26280?
Upgrading to 5.30.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is systeminformation affected?
Yes, systeminformation is affected in releases prior to 5.30.8. Upgrade your dependency to 5.30.8 or later.
What is the CVSS score of CVE-2026-26280?
CVE-2026-26280 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-26280?
CVE-2026-26280 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2026-26280?
Run the dependency tree command: 'npm ls systeminformation'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9c88-49p5-5ggf",
  "modified" : "2026-02-19T21:57:02Z",
  "published" : "2026-02-18T21:51:26Z",
  "aliases" : [ "CVE-2026-26280" ],
  "summary" : "Systeminformation has a Command Injection via unsanitized interface parameter in wifi.js retry path",
  "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('iwlist ${iface} scan')`.\n\n### PoC\n1. Install `systeminformation@5.30.7`\n2. Call `si.wifiNetworks('eth0; id')`\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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "systeminformation"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.30.8"
      } ]
    } ]
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-18T21:51:26Z",
    "nvd_published_at" : "2026-02-19T20:25:43Z"
  }
}