{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116674","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-26T20:00:59.829Z","datePublished":"2026-10-27T16:40:46.246Z","dateUpdated":"2026-10-27T16:40:46.246Z"},"containers":{"cna":{"title":"systeminformation: Prototype pollution in `networkStats()` via the interface name","problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"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"}}],"references":[{"name":"https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j"},{"name":"https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969","tags":["x_refsource_MISC"],"url":"https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969"},{"name":"https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13","tags":["x_refsource_MISC"],"url":"https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13"}],"affected":[{"vendor":"sebhildebrandt","product":"systeminformation","versions":[{"version":"< 5.33.13","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-27T16:40:46.246Z"},"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."}],"source":{"advisory":"GHSA-7648-jmwf-vw7j","discovery":"UNKNOWN"}}}}