Vulnerability · Published Oct 26, 2026 · Assigned by GitHub_M

CVE-2026-116576systeminformation: Windows command injection in services() through Unicode quotation marks

High 7.8

In plain English

A high-severity OS command injection in systeminformation from sebhildebrandt. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.1%top 96.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

systeminformation is a System and OS information library for node.js. Prior to 5.33.16, services() in lib/processes.js inserts a caller-supplied service name into a PowerShell Get-CimInstance filter after processing it with sanitizeShellString() in lib/util.js. On Windows, the sanitizer removes ASCII quotes but permits Unicode quotation marks that PowerShell accepts as string delimiters, allowing crafted input to terminate the filter and place a PowerShell expression in the command executed by util.powerShell(). The expression runs with the Node.js process account's permissions and may read or change accessible files, alter application data, or disrupt the service. The package does not expose a network service itself, so remote reachability depends on a consuming application forwarding attacker-controlled input to services() or getDynamicData(). This issue is fixed in version 5.33.16.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	node-systeminformation	no fix listed	DEBIAN-CVE-2026-116576
Ubuntu:26.10	node-systeminformation	no fix listed	UBUNTU-CVE-2026-116576
npm	systeminformation	5.33.16	GHSA-3f7j-7jwc-fxfj

Affected products (as reported)

Vendor	Product	Versions
sebhildebrandt	systeminformation	< 5.33.16

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-3f7j-7jwc-fxfj x_refsource_CONFIRM
https://github.com/sebhildebrandt/systeminformation/commit/5014c6d25cfce7363b937977327baa853cdba0bf x_refsource_MISC
https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.16 x_refsource_MISC