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


- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 27 Oct 2026
- **Updated:** 28 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-116673, ECHO-c830-d240-4148, GHSA-4vjg-vx72-qq4g, UBUNTU-CVE-2026-116673

## 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.

Weakness: CWE-59 (Improper Link Resolution Before File Access), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-116673?

2 open source packages ship an affected version, including systeminformation.


| Package | Ecosystem | 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.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-116673 and fix it if it is affected.

What it is: CVE-2026-116673 is a low-severity vulnerability in sebhildebrandt systeminformation, published on 27 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-116673 in the wild and no public exploit code.

Affected packages and fixed versions:
- systeminformation (npm): affected all versions; fixed in 5.33.14
- systeminformation (npm): affected all versions; fixed in 5.33.14

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-116673/ (Markdown: https://insights.sbomify.com/CVE-2026-116673/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-116673
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-116673
- OSV: https://osv.dev/vulnerability/CVE-2026-116673

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-116673/
Summaries are generated and may contain mistakes; the official description above is the record.