Vulnerability-Lookup

GHSA-FVQR-27WR-82FM

Vulnerability from github – Published: 2018-07-26 15:14 – Updated: 2025-08-12 21:37

Summary

Prototype Pollution in lodash

Details

Versions of lodash before 4.17.5 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 __proto__ causing the addition or modification of an existing property that will exist on all objects.

Recommendation

Update to version 4.17.5 or later.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "lodash"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.17.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "lodash-rails"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.17.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-3721"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1321",
      "CWE-471"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:35:26Z",
    "nvd_published_at": "2018-06-07T02:29:08Z",
    "severity": "MODERATE"
  },
  "details": "Versions of `lodash` before 4.17.5 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 `__proto__` 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 4.17.5 or later.",
  "id": "GHSA-fvqr-27wr-82fm",
  "modified": "2025-08-12T21:37:06Z",
  "published": "2018-07-26T15:14:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-3721"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4a"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/310443"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/lodash-rails/CVE-2018-3721.yml"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190919-0004"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Prototype Pollution in lodash"
}

CVE-2018-3721 (GCVE-0-2018-3721)

Vulnerability from cvelistv5 – Published: 2018-06-07 02:00 – Updated: 2024-09-16 22:34

Summary

lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith functions, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.

Severity

No CVSS data available.

CWE

CWE-471 - Modification of Assumed-Immutable Data (MAID) (CWE-471)

Assigner

hackerone CNA under the mitre root

CNA scorecard D 59/100 over 186 records in the last 180 days details

References

3 references

URL	Tags
https://hackerone.com/reports/310443	x_refsource_MISC
https://github.com/lodash/lodash/commit/d8e069cc3…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2019091…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
HackerOne	lodash node module	Affected: Versions before 4.17.5

Date Public

2018-04-26 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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