{"id":"CVE-2018-16487","aliases":["GHSA-4xc9-xhrj-v574"],"url":"https://o3.security/vulnerability/CVE-2018-16487","summary":"Prototype Pollution in lodash","details":"Versions of `lodash` before 4.17.11 are vulnerable to prototype pollution. \n\nThe vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of `Object` via `{constructor: {prototype: {...}}}` causing the addition or modification of an existing property that will exist on all objects.\n\n\n\n\n## Recommendation\n\nUpdate to version 4.17.11 or later.","published":"2019-02-01T18:29:00.943Z","modified":"2026-07-08T17:16:38.790504Z","cvss":{"score":5.6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"},"epss":{"score":0.01553,"percentile":0.73908,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"lodash","fixedVersion":"4.17.11"},{"ecosystem":"RubyGems","name":"lodash-rails","fixedVersion":"4.17.11"}],"fix":{"url":"https://github.com/lodash/lodash/commit/90e6199a161b6445b01454517b40ef65ebecd2ad","label":"lodash/lodash@90e6199"},"references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190919-0004/"},{"type":"REPORT","url":"https://hackerone.com/reports/380873"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16487"},{"type":"WEB","url":"https://github.com/lodash/lodash/commit/90e6199a161b6445b01454517b40ef65ebecd2ad"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/lodash-rails/CVE-2018-16487.yml"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20190919-0004"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T17:16:38.790504Z"}}