# CVE-2020-26300: systeminformation command injection in service functions

Source: https://junglewise.ai/threats/cve-2020-26300-systeminformation-command-injection-in-service-functions  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2020-10-27. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2020-26300 · Severity: low · CVSS 3.1 · Published 2020-10-27

systeminformation is a Node.js library that retrieves system and hardware information. A command injection vulnerability allows attackers to execute arbitrary shell commands through unsanitized service parameter strings passed to functions like is.services(), is.inetChecksite(), and si.inetLatency(). This could lead to unauthorized code execution on systems using the vulnerable library.

Technologies: [systeminformation (npm)](https://junglewise.ai/threats/technologies/systeminformation). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2020-26300 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-26300 being exploited in the wild.

**How severe is CVE-2020-26300?** Low severity, with a CVSS score of 3.1, published 27 October 2020.

**Which products and versions are affected?** systeminformation (npm) SEMVER:introduced=0,fixed=4.26.2.

**Is there a fix for CVE-2020-26300?** Yes. systeminformation (npm): upgrade to 4.26.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2020-26300 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2020-26300?** 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 4.26.2 or later

  ```sh
  npm install systeminformation@4.26.2
  ```


## Technical details

A command injection vulnerability (CWE-78) exists in systeminformation due to insufficient sanitization of shell command parameters. The vulnerability affects multiple functions including is.services(), is.inetChecksite(), si.inetLatency(), si.networkStats(), and si.processLoad(). Attackers can inject malicious shell commands through unsanitized service parameter strings. The vulnerability requires no authentication or user interaction, only that an application uses the affected functions with untrusted input. The issue was resolved in version 4.26.2 through shell string sanitation fixes.

## Affected products

- sebhildebrandt systeminformation < 4.26.2

## Identifiers

- CVE-2020-26300
- GHSA-fj59-f6c3-3vw4

## Timeline

- 2020-10-27: disclosed
- 2020-10-27: patched: Fixed in version 4.26.2
- 2021-09-09: advisory: CVE-2020-26300 published

## References

- [https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-fj59-f6c3-3vw4](https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-fj59-f6c3-3vw4)

## Related threats

- [systeminformation prototype pollution in networkStats](https://junglewise.ai/threats/cve-2026-116674-systeminformation-is-a-system-and-os-information-library-for)
- [systeminformation has path traversal in Linux networkStats() that allows symlink-based file disclosure outside /sys/class/net](https://junglewise.ai/threats/cve-2026-116673-systeminformation-is-a-system-and-os-information-library-for)
- [systeminformation PowerShell command injection via Unicode quotation marks](https://junglewise.ai/threats/cve-2026-116576-systeminformation-is-a-system-and-os-information-library-for)
- [sebhildebrandt systeminformation OS command injection in networkInterfaces](https://junglewise.ai/threats/cve-2026-50289-sebhildebrandt-systeminformation-os-command-injection-in)
- [sebhildebrandt systeminformation command injection in networkInterfaces](https://junglewise.ai/threats/cve-2026-44724-sebhildebrandt-systeminformation-command-injection-in)