{"cve":"CVE-2018-3721","nvd":{"published":"2018-06-07T02:29:08.317","modified":"2026-06-17T01:57:43.360","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-1321","CWE-471"],"references":["https://github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4a","https://hackerone.com/reports/310443","https://security.netapp.com/advisory/ntap-20190919-0004/","https://github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4a","https://hackerone.com/reports/310443"],"products":["lodash:lodash","netapp:active_iq_unified_manager","netapp:system_manager"],"source":"nvd","synced_at":"2026-10-19T20:50:40.212176939+00:00"},"epss":{"cve":"CVE-2018-3721","score":0.02347,"percentile":0.83673,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-fvqr-27wr-82fm","url":"https://osv.dev/vulnerability/GHSA-fvqr-27wr-82fm","summary":"Prototype Pollution in lodash","modified":"2025-08-12T21:55:16.003066Z","packages":[{"ecosystem":"npm","name":"lodash","purl":"pkg:npm/lodash","ranges":["<4.17.5"],"fixed":["4.17.5"]},{"ecosystem":"RubyGems","name":"lodash-rails","purl":"pkg:gem/lodash-rails","ranges":["<4.17.5"],"fixed":["4.17.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}