{"cve":"CVE-2018-3728","nvd":{"published":"2018-03-30T19:29:00.210","modified":"2026-06-17T01:57:44.063","status":"Modified","description":"hoek node module before 4.2.0 and 5.0.x before 5.0.3 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via 'merge' and 'applyToDefaults' 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":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-471"],"references":["http://www.securityfocus.com/bid/103108","https://access.redhat.com/errata/RHSA-2018:1263","https://access.redhat.com/errata/RHSA-2018:1264","https://github.com/hapijs/hoek/commit/32ed5c9413321fbc37da5ca81a7cbab693786dee","https://hackerone.com/reports/310439"],"products":["hapijs:hoek"],"source":"nvd","synced_at":"2026-10-19T20:49:59.483420567+00:00"},"epss":{"cve":"CVE-2018-3728","score":0.0419,"percentile":0.90937,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jp4x-w63m-7wgm","url":"https://osv.dev/vulnerability/GHSA-jp4x-w63m-7wgm","summary":"Prototype Pollution in hoek","modified":"2025-05-29T22:49:49Z","packages":[{"ecosystem":"npm","name":"hoek","purl":"pkg:npm/hoek","ranges":[">=5.0.0 <5.0.3"],"fixed":["5.0.3"]},{"ecosystem":"npm","name":"hoek","purl":"pkg:npm/hoek","ranges":["<4.2.1"],"fixed":["4.2.1"]}]}],"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."]}