{"id":"CVE-2026-116674","aliases":[],"title":"systeminformation: Prototype pollution in `networkStats()` via the interface name","description":"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5.33.13.","severity":"medium","score":6.5,"published":"2026-10-27T16:40:46.246Z","modified":"2026-10-27T16:40:46.246Z","withdrawn":false,"knownExploited":false,"affected":[],"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"],"sources":[{"name":"CVE","id":"CVE-2026-116674","modified":"2026-10-27T16:40:46.246Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116674"}],"assessments":[{"source":"CNA","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L","score":6.5}]}