{"id":"CVE-2020-7713","aliases":["EUVD-2021-1215","GHSA-w8f3-pvx4-4c3h"],"status":"published","title":"Prototype Pollution","description":"All versions of package arr-flatten-unflatten are vulnerable to Prototype Pollution via the constructor.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01916,"percentile":0.8001,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1321"],"published":"2020-09-01T09:10:11Z","modified":"2026-06-17T03:25:18Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"arr-flatten-unflatten","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.1.4"}]}]},{"source":"osv","ecosystem":"npm","package":"arr-flatten-unflatten","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.1.4"}]}]}],"products":[{"vendor":"arr-flatten-unflatten_project","product":"arr-flatten-unflatten"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-ARRFLATTENUNFLATTEN-598396","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7713","tags":["advisory"]},{"url":"https://github.com/Quernest/arr-flatten-unflatten/pull/8","tags":["web"]},{"url":"https://github.com/Quernest/arr-flatten-unflatten/commit/cb4351c75f87a4fbec3b6140c40ee2993f574372","tags":["web"]},{"url":"https://github.com/advisories/GHSA-w8f3-pvx4-4c3h"}],"sources":{"cve":[{"id":"CVE-2020-7713","title":"Prototype Pollution","description":"All versions of package arr-flatten-unflatten are vulnerable to Prototype Pollution via the constructor.","status":"published","published":"2020-09-01T09:10:11.703Z","modified":"2024-09-16T19:31:22.363Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:35:58.787905Z"}],"euvd":[{"id":"EUVD-2021-1215","description":"All versions of package arr-flatten-unflatten are vulnerable to Prototype Pollution via the constructor.","status":"published","published":"2020-09-01T09:10:11Z","modified":"2024-09-16T19:31:22Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-03T00:55:22.355392Z"}],"ghsa":[{"id":"GHSA-w8f3-pvx4-4c3h","title":"Prototype Pollution in arr-flatten-unflatten","description":"All versions of package arr-flatten-unflatten up to and including version 1.1.4 are vulnerable to Prototype Pollution via the constructor.","status":"published","published":"2021-05-06T18:11:39Z","modified":"2023-01-27T05:08:29Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:36:22.592333Z"}],"nvd":[{"id":"CVE-2020-7713","description":"All versions of package arr-flatten-unflatten are vulnerable to Prototype Pollution via the constructor.","status":"published","published":"2020-09-01T09:15:12.923Z","modified":"2026-06-17T03:25:18.923Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/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-1321"],"updated_at":"2026-11-02T14:06:13.600965Z"}],"osv":[{"id":"GHSA-w8f3-pvx4-4c3h","title":"Prototype Pollution in arr-flatten-unflatten","description":"All versions of package arr-flatten-unflatten up to and including version 1.1.4 are vulnerable to Prototype Pollution via the constructor.","status":"published","published":"2021-05-06T18:11:39Z","modified":"2023-11-08T04:04:06.357175Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:58.401149Z"}]}}