What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-19 · updated 2026-07-15
• Weakness: CWE-78

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.

Affected products

• sebhildebrandt systeminformation: before 5.30.8 — fixed in 5.30.8

How to fix

Upgrade to a fixed version: sebhildebrandt systeminformation 5.30.8. Check the vendor advisory for mitigations.

References

• https://github.com/sebhildebrandt/systeminformation/commit/22242aa56188f2bffcbd7d265a11e1ebb808b460
• https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-9c88-49p5-5ggf
• https://access.redhat.com/security/cve/CVE-2026-26280
• https://bugzilla.redhat.com/show_bug.cgi?id=2441121
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26280.json

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