{"id":"CVE-2018-16491","aliases":["DEBIAN-CVE-2018-16491","EUVD-2019-0337","GHSA-r96c-57pf-9jjm","UBUNTU-CVE-2018-16491"],"status":"published","title":"Prototype Pollution in node.extend","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01719,"percentile":0.77616,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-74"],"published":"2019-02-01T18:00:00Z","modified":"2026-10-23T18:03:00Z","fixes":[{"ecosystem":"npm","package":"node.extend","fixed_in":["1.1.7","2.0.1"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"node-extend","fixed_in":["3.0.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"node-extend","fixed_in":["3.0.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"node-extend","fixed_in":["3.0.2-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"node.extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.7"}]}]},{"source":"ghsa","ecosystem":"npm","package":"node.extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"last_affected":"2.0.0"},{"fixed":"2.0.1"}]}],"versions":["2.0.0"]},{"source":"osv","ecosystem":"Debian:12","package":"node-extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"node-extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"node-extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-1"}]}]},{"source":"osv","ecosystem":"npm","package":"node.extend","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.1.7"}]}]},{"source":"osv","ecosystem":"npm","package":"node.extend","ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.0.1"}]}],"versions":["2.0.0"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"node-extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"node-extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0-1"]}],"products":[{"vendor":"dreamerslab","product":"node.extend"},{"vendor":"hackerone","product":"node.extend"}],"references":[{"url":"https://hackerone.com/reports/430831","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16491","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r96c-57pf-9jjm","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/781","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-16491","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-16491","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-16491","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-16491","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:00:00Z","modified":"2024-08-05T10:24:32.711Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:11.426178Z"}],"euvd":[{"id":"EUVD-2019-0337","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:00:00Z","modified":"2024-08-05T10:24:32Z","updated_at":"2026-11-03T02:39:40.768074Z"}],"ghsa":[{"id":"GHSA-r96c-57pf-9jjm","title":"Prototype Pollution in node.extend","description":"Versions of `node.extend` before 1.1.7 or 2.0.1 are vulnerable to prototype pollution. \n\n\n## Recommendation\n\nUpdate to version 1.1.7, 2.0.1 or later.","status":"published","published":"2019-02-07T18:17:34Z","modified":"2023-09-12T18:31:24Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:04.447845Z"}],"nvd":[{"id":"CVE-2018-16491","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.083Z","modified":"2026-06-17T01:44:23.22Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-400","CWE-74"],"updated_at":"2026-11-02T14:04:53.728218Z"}],"osv":[{"id":"CVE-2018-16491","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.083Z","modified":"2026-03-14T09:28:10.40467Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:08.533609Z"},{"id":"DEBIAN-CVE-2018-16491","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.083Z","modified":"2026-10-23T18:03:00.979070253Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:30.290351Z"},{"id":"GHSA-r96c-57pf-9jjm","title":"Prototype Pollution in node.extend","description":"Versions of `node.extend` before 1.1.7 or 2.0.1 are vulnerable to prototype pollution. \n\n\n## Recommendation\n\nUpdate to version 1.1.7, 2.0.1 or later.","status":"published","published":"2019-02-07T18:17:34Z","modified":"2023-11-08T04:00:00.993913Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:55.480549Z"},{"id":"UBUNTU-CVE-2018-16491","description":"A prototype pollution vulnerability was found in node.extend \u003c1.1.7, ~\u003c2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:00Z","modified":"2025-10-24T04:47:11Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:17.496046Z"}]}}