CVE-2026-116673 systeminformation: Path traversal in Linux networkStats() allows symlink-based file disclosure outside /sys/class/net
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-116673?
CVE-2026-116673 is a low-severity vulnerability in sebhildebrandt systeminformation, published on 27 Oct 2026.
Official description
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.
Which versions are affected by CVE-2026-116673?
2 open source packages ship an affected version, including systeminformation.
| Package | Affected | Fixed in |
|---|---|---|
systeminformation npm | All versions | 5.33.14 |
systeminformation npm | All versions | 5.33.14 |
How do I fix CVE-2026-116673?
Upgrade systeminformation to 5.33.14 or later.
Is CVE-2026-116673 being exploited?
There is no known exploitation of CVE-2026-116673 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-116673, ECHO-c830-d240-4148, GHSA-4vjg-vx72-qq4g, UBUNTU-CVE-2026-116673.