systeminformation is a System and OS information library for node.js.
CVE-2026-116576
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 Win32Service -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. PowerShell accepts the curly marks as string delimiters, so an input can end the filter string and place a command expression in the generated command. For example, the input below uses curly quotation marks to end the generated…
Assessment
- CVSS
- 7.8 (v3.1)
- Severity
- High
- EPSS
- 0.00145% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 26 October 2026
- Last updated
- 28 October 2026
- Affected
- npm · systeminformation
- Weakness
- CWE-78
- Assigner
- security-advisories@github.com
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
At the source
References
- https://github.com/sebhildebrandt/systeminformation/commit/5014c6d25cfce7363b937977327baa853cdba0bf
- https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.16
- https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-3f7j-7jwc-fxfj
- https://nvd.nist.gov/vuln/detail/CVE-2026-116576
- https://github.com/advisories/GHSA-3f7j-7jwc-fxfj
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-116576