{"id":"CVE-2018-16492","aliases":["CLSA-2026-1773188141","DEBIAN-CVE-2018-16492","EUVD-2019-0333","GHSA-qrmc-fj45-qfc2","UBUNTU-CVE-2018-16492"],"status":"published","title":"Prototype Pollution in extend","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 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":"2026-11-10","score":0.0305,"percentile":0.87673,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-400","CWE-74"],"published":"2019-02-01T18:00:00Z","modified":"2026-10-23T18:03:00Z","exploits":[{"source":"pocgithub","id":"dsp-testing/CVE-2018-16492","title":"dsp-testing/CVE-2018-16492","date":"2021-01-05","url":"https://github.com/dsp-testing/CVE-2018-16492"}],"fixes":[{"ecosystem":"npm","package":"extend","fixed_in":["3.0.2","2.0.2"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:npm","package":"extend","fixed_in":["3.0.0-tuxcare.3"],"sources":["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":"extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.0.2"}]}]},{"source":"ghsa","ecosystem":"npm","package":"extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.3"},{"fixed":"2.0.2"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"extend","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0-tuxcare.0"},{"fixed":"3.0.0-tuxcare.3"}]}],"versions":["3.0.0","3.0.0-tuxcare.1","3.0.0-tuxcare.2"]},{"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":"extend","ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.0.2"}]}]},{"source":"osv","ecosystem":"npm","package":"extend","ranges":[{"type":"SEMVER","events":[{"introduced":"1.1.3"},{"fixed":"2.0.2"}]}]},{"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":"extend_project","product":"extend"},{"vendor":"hackerone","product":"extend"}],"references":[{"url":"https://hackerone.com/reports/381185","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16492","tags":["advisory"]},{"url":"https://github.com/github/advisory-database/pull/6695","tags":["web"]},{"url":"https://github.com/justmoon/node-extend/pull/48","tags":["web"]},{"url":"https://github.com/justmoon/node-extend/commit/0e68e71d93507fcc391e398bc84abd0666b28190","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qrmc-fj45-qfc2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-16492","tags":["advisory"]},{"url":"https://github.com/justmoon/node-extend","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2018-16492","tags":["report"]},{"url":"https://www.npmjs.com/advisories/996","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-16492","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-16492","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:00:00Z","modified":"2024-08-05T10:24:32.84Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:11.426178Z"}],"euvd":[{"id":"EUVD-2019-0333","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 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-qrmc-fj45-qfc2","title":"Prototype Pollution in extend","description":"Versions of `extend` prior to 3.0.2 (for 3.x) and 2.0.2 (for 2.x) are vulnerable to Prototype Pollution. The `extend()` function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects.\n\n\n\n\n## Recommendation\n\nIf you're using `extend` 3.x upgrade to 3.0.2 or later.\nIf you're using `extend` 2.x upgrade to 2.0.2 or later.","status":"published","published":"2019-02-07T18:03:28Z","modified":"2026-01-22T21:48:15Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:39:19.525691Z"}],"nvd":[{"id":"CVE-2018-16492","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.13Z","modified":"2026-06-17T01:44:23.34Z","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-2018-16492","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.13Z","modified":"2026-03-14T09:28:10.430121Z","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-2018-16492","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.13Z","modified":"2026-10-23T18:03:00.975599741Z","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":"UBUNTU-CVE-2018-16492","description":"A prototype pollution vulnerability was found in module extend \u003c2.0.2, ~\u003c3.0.2 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"},{"id":"CLSA-2026-1773188141","title":"TuxCare security update for extend (1 CVE)","description":"TuxCare rebuilt extend to address 1 CVE. Fixed in 3.0.0-tuxcare.3.","status":"published","published":"2026-08-04T14:52:12Z","modified":"2026-10-15T09:47:28.822914829Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"GHSA-qrmc-fj45-qfc2","title":"Prototype Pollution in extend","description":"Versions of `extend` prior to 3.0.2 (for 3.x) and 2.0.2 (for 2.x) are vulnerable to Prototype Pollution. The `extend()` function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects.\n\n\n\n\n## Recommendation\n\nIf you're using `extend` 3.x upgrade to 3.0.2 or later.\nIf you're using `extend` 2.x upgrade to 2.0.2 or later.","status":"published","published":"2019-02-07T18:03:28Z","modified":"2026-02-03T03:09:19.1044Z","cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:54.760124Z"}]}}