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High, CVSS 7.8amended

systeminformation vulnerable to Windows command injection in services() through Unicode quotation marks

CVE-2026-116576GHSA-3f7j-7jwc-fxfj

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (systeminformation 5.33.16), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.8 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2026-116576: 0.14% estimated exploitation activity in the next 30 days; percentile 3.80 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary On Windows, `systeminformation@5.33.15` builds a PowerShell command using the value passed to `services()`. The default sanitizer removes ASCII quotes but keeps Unicode curly quotes, spaces, and parentheses. A crafted service name can use those characters to break out of the generated filter string and run a PowerShell expression. The expression runs with the permissions of the Node.js process. This report confirms version `5.33.15`. Other package versions have not been checked.

Details In `lib/processes.js`, `services()` sanitizes the caller's string with `sanitizeShellString()` and later inserts each resulting name into a `Get-CimInstance Win32_Service -Filter` command. The Windows branch passes that command to `util.powerShell()`. The sanitizer in `lib/util.js` removes the ASCII double quote, but it does not remove U+201C or U+201D, the left and right curly double quotation marks. It also permits spaces and parentheses when called in its default, non-strict mode.…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from osv record GHSA-3f7j-7jwc-fxfj

  2. Revision 1 · created ·

    Published from ghsa record GHSA-3f7j-7jwc-fxfj

Agent brief

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# Patch Next advisory brief: CVE-2026-116576

Advisory: systeminformation vulnerable to Windows command injection in services() through Unicode quotation marks
IDs: CVE-2026-116576, GHSA-3f7j-7jwc-fxfj
Record: https://patchnext.com/advisories/cve-2026-116576 (revision 2, source checked 29 Oct 2026, 06:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: systeminformation 5.33.16. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm systeminformation: affected < 5.33.16; fixed in 5.33.16

## Suggested inspection (read-only)
- `npm ls systeminformation --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on systeminformation.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-3f7j-7jwc-fxfj (OSV record GHSA-3f7j-7jwc-fxfj lists affected ranges: npm systeminformation >=0 <5.33.16 (fixed))
- Verified: https://github.com/advisories/GHSA-3f7j-7jwc-fxfj (GitHub-reviewed advisory GHSA-3f7j-7jwc-fxfj lists affected ranges: npm systeminformation >=0 <5.33.16)

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