CVE-2026-116673: systeminformation has path traversal in Linux networkStats() that allows symlink-based file disclosure outside /sys/class/net

CVE-2026-116673 · Severity: low · CVSS 3.3 · Published 2026-10-27

systeminformation is a System and OS information library for node.js. Prior to 5.33.14, the Linux networkStats(iface) implementation uses the caller-supplied interface value in an fs.existsSync() check and to build /sys/class/net/<iface> paths, including the operstate path, without verifying that it is a single interface-name segment or that the resolved path remains under /sys/class/net. An attacker who can control iface and create a directory containing symlinked statistics files can use parent-directory components and symlink traversal to make the API return the first line of a file readable by the Node.js process. The package does not expose a network endpoint, and the demonstrated scenario requires local filesystem setup. This issue is fixed in version 5.33.14.

Technologies: systeminformation (npm). Vendors: npm.

Quick answers

Is CVE-2026-116673 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-116673 being exploited in the wild.
How severe is CVE-2026-116673?
Low severity, with a CVSS score of 3.3, published 27 October 2026.
Which products and versions are affected?
systeminformation (npm) < 5.33.14, SEMVER:introduced=0,fixed=5.33.14.
Is there a fix for CVE-2026-116673?
Yes. systeminformation (npm): upgrade to 5.33.14 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-116673?
Check whether you run systeminformation (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • systeminformation (npm): upgrade to 5.33.14 or later
    npm install systeminformation@5.33.14

Affected products

  • systeminformation (npm) < 5.33.14, SEMVER:introduced=0,fixed=5.33.14

Identifiers

  • CVE-2026-116673
  • GHSA-4vjg-vx72-qq4g

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