GHSA-4xc9-xhrj-v574
Vulnerability from github
Published
2019-02-07 18:16
Modified
2025-08-12 21:36
Summary
Prototype Pollution in lodash
Details

Versions of lodash before 4.17.11 are vulnerable to prototype pollution.

The 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.

Recommendation

Update to version 4.17.11 or later.

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "lodash"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.17.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "lodash-rails"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.17.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-16487"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T20:59:41Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Versions of `lodash` before 4.17.11 are vulnerable to prototype pollution. \n\nThe vulnerable functions are \u0027defaultsDeep\u0027, \u0027merge\u0027, and \u0027mergeWith\u0027 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.",
  "id": "GHSA-4xc9-xhrj-v574",
  "modified": "2025-08-12T21:36:47Z",
  "published": "2019-02-07T18:16:48Z",
  "references": [
    {
      "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://hackerone.com/reports/380873"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Prototype Pollution in lodash"
}


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