{"id":"CVE-2018-16490","aliases":["EUVD-2019-0297","GHSA-h466-j336-74wx"],"status":"published","title":"Prototype Pollution in mpath","description":"A prototype pollution vulnerability was found in module mpath \u003c0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01101,"percentile":0.6592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-400","CWE-74"],"published":"2019-02-01T18:00:00Z","modified":"2026-06-17T01:44:23Z","fixes":[{"ecosystem":"npm","package":"mpath","fixed_in":["0.5.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"mpath","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.1"}]}]},{"source":"osv","ecosystem":"npm","package":"mpath","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.5.1"}]}]}],"products":[{"vendor":"hackerone","product":"mpath"},{"vendor":"mpath_project","product":"mpath"}],"references":[{"url":"https://hackerone.com/reports/390860","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16490","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h466-j336-74wx","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/779","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-16490","description":"A prototype pollution vulnerability was found in module mpath \u003c0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:00:00Z","modified":"2024-08-05T10:24:32.842Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:11.072321Z"}],"euvd":[{"id":"EUVD-2019-0297","description":"A prototype pollution vulnerability was found in module mpath \u003c0.5.1 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-h466-j336-74wx","title":"Prototype Pollution in mpath","description":"Versions of `mpath` before 0.5.1 are vulnerable to prototype pollution. Provided certain input `mpath` can add or modify properties of the `Object` prototype. These properties will be present on all objects.\n\n\n## Recommendation\n\nUpdate to version `0.5.1` or later.","status":"published","published":"2019-02-07T18:17:26Z","modified":"2023-09-07T18:22:31Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-400","CWE-1321"],"updated_at":"2026-11-02T14:37:02.632342Z"}],"nvd":[{"id":"CVE-2018-16490","description":"A prototype pollution vulnerability was found in module mpath \u003c0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.","status":"published","published":"2019-02-01T18:29:01.037Z","modified":"2026-06-17T01:44:23.11Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-400","CWE-74"],"updated_at":"2026-11-02T14:04:53.728218Z"}],"osv":[{"id":"GHSA-h466-j336-74wx","title":"Prototype Pollution in mpath","description":"Versions of `mpath` before 0.5.1 are vulnerable to prototype pollution. Provided certain input `mpath` can add or modify properties of the `Object` prototype. These properties will be present on all objects.\n\n\n## Recommendation\n\nUpdate to version `0.5.1` or later.","status":"published","published":"2019-02-07T18:17:26Z","modified":"2023-11-08T04:00:00.932917Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-1321","CWE-400"],"updated_at":"2026-11-02T15:46:48.546324Z"}]}}