{"cve":"CVE-2018-3752","nvd":{"published":"2018-07-03T21:29:00.700","modified":"2026-06-17T01:57:46.300","status":"Modified","description":"The utilities function in all versions <= 1.0.0 of the merge-options node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add or modify existing properties that will exist on all objects.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-20"],"references":["https://hackerone.com/reports/311336","https://hackerone.com/reports/311336"],"products":["merge-options_project:merge-options"],"source":"nvd","synced_at":"2026-10-19T20:51:47.459859389+00:00"},"epss":{"cve":"CVE-2018-3752","score":0.01428,"percentile":0.72992,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qw93-45r3-p66p","url":"https://osv.dev/vulnerability/GHSA-qw93-45r3-p66p","summary":"Prototype Pollution in merge-options","modified":"2023-11-08T04:00:18.963578Z","packages":[{"ecosystem":"npm","name":"merge-options","purl":"pkg:npm/merge-options","ranges":["<1.0.1"],"fixed":["1.0.1"]}]}],"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."]}