{"id":"UBUNTU-CVE-2026-116674","details":"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.","modified":"2026-10-28T20:17:45.720829018Z","published":"2026-10-27T17:16:00Z","upstream":["CVE-2026-116674"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-116674"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-116674"},{"type":"REPORT","url":"https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j"},{"type":"REPORT","url":"https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969"},{"type":"REPORT","url":"https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13"}],"affected":[{"package":{"name":"node-systeminformation","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/node-systeminformation?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.31.6-4","5.31.7-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-systeminformation","binary_version":"5.31.7-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116674.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L"},{"type":"Ubuntu","score":"medium"}]}