sebhildebrandt systeminformation up to 5.30.7 lib/wifi.js wifiNetworks os command injection

Summaryinfo

A vulnerability was found in sebhildebrandt systeminformation up to 5.30.7. It has been declared as critical. The affected element is the function wifiNetworks in the library lib/wifi.js. The manipulation results in os command injection. This vulnerability was named CVE-2026-26280. The attack needs to be approached locally. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in sebhildebrandt systeminformation up to 5.30.7. Affected is the function wifiNetworks in the library lib/wifi.js. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-26280 since 02/12/2026. The exploitability is told to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 5.30.8 eliminates this vulnerability. Applying the patch 22242aa56188f2bffcbd7d265a11e1ebb808b460 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• sebhildebrandt

Name

• systeminformation

Version

• 5.30.0
• 5.30.1
• 5.30.2
• 5.30.3
• 5.30.4
• 5.30.5
• 5.30.6
• 5.30.7

License

• open-source

Website

• Product: https://github.com/sebhildebrandt/systeminformation/

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