systeminformation: Prototype pollution in `networkStats()` via the interface name

{
  "id": "25d5ade2086e2eb1dfb7f1595db875936239007c356514e58a42396fb97502e1",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116674",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "systeminformation: Prototype pollution in `networkStats()` via the interface name",
    "summary": "systeminformation is a System and OS information library for node.js. Prior to 5.33.13, networkStats(ifaces) in lib/network.js on FreeBSD, OpenBSD, and NetBSD stores per-interface data in the plain-object _network cache and indexes it with the sanitized caller-controlled interface name. Passing proto causes the inherited Object.prototype value to be used instead of creating an own cache entry, so calcNetworkSpeed() writes rx_bytes, tx_bytes, rx_sec, tx_sec, ms, last_ms, and operstate onto Object.prototype. The polluted property names are fixed and their values come from interface statistics, but inherited-name collisions and enumerable keys can corrupt application branching, serialization, configuration merging, validation, or lookup behavior. This issue is fixed in version 5.33.13.",
    "evidence": "cve:CVE-2026-116674",
    "products": [
      {
        "name": {
          "value": "systeminformation",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116674",
      "aliases": [
        "CVE-2026-116674"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 6.5,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L",
            "integrityImpact": "HIGH",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "LOW",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          }
        }
      ],
      "affected": [
        {
          "vendor": "sebhildebrandt",
          "product": "systeminformation",
          "versions": [
            {
              "status": "affected",
              "version": "< 5.33.13"
            }
          ]
        }
      ],
      "modified": "2026-10-27T16:40:46.246Z",
      "provider": "cve",
      "references": [
        "https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j",
        "https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969",
        "https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-27T16:40:46.246Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116674",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 394466,
  "published_at": "2026-10-27T16:40:46.246+00:00"
}