CVE-2026-26280

Summary

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 Software

Weaknesses

• CWE-78: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

systeminformation: systeminformation: Arbitrary command execution via unsanitized network interface parameter

Additional References

• 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

References

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

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