{"id":"CVE-2026-116674","state":"PUBLISHED","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.","publishedAt":"2026-10-27T16:40:46.246Z","updatedAt":"2026-10-27T16:40:46.246Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["sebhildebrandt systeminformation"],"affected":[{"vendor":"sebhildebrandt","product":"systeminformation","versions":[{"version":"< 5.33.13","status":"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"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116674.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116674","state":"PUBLISHED","datePublished":"2026-10-27T16:40:46.246Z","dateUpdated":"2026-10-27T16:40:46.246Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-26T20:00:59.829Z"},"containers":{"cna":{"title":"systeminformation: Prototype pollution in `networkStats()` via the interface name","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"sebhildebrandt","product":"systeminformation","versions":[{"version":"< 5.33.13","status":"affected"}]}],"references":[{"url":"https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j","name":"https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969","name":"https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969","tags":["x_refsource_MISC"]},{"url":"https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13","name":"https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-27T16:40:46.246Z"},"source":{"advisory":"GHSA-7648-jmwf-vw7j","discovery":"UNKNOWN"}}}}}