{"id":"CVE-2018-3728","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-3728","generatedAt":"2026-10-29T02:03:36.873Z","title":"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__,…","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.","published":"2018-03-30T19:29:00.000Z","lastModified":"2026-06-17T01:57:44.000Z","status":"Modified","sourceIdentifier":"support@hackerone.com","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-471"],"affected":["hapijs/hoek"],"epss":{"score":0.0419,"percentile":0.90883,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (4.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/103108","tags":["Third Party Advisory","VDB Entry"],"source":"support@hackerone.com"},{"url":"https://access.redhat.com/errata/RHSA-2018:1263","tags":["Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://access.redhat.com/errata/RHSA-2018:1264","tags":["Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://github.com/hapijs/hoek/commit/32ed5c9413321fbc37da5ca81a7cbab693786dee","tags":["Patch","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://hackerone.com/reports/310439","tags":["Exploit","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://nodesecurity.io/advisories/566","tags":["Broken Link"],"source":"support@hackerone.com"},{"url":"https://snyk.io/vuln/npm:hoek:20180212","tags":["Exploit","Patch","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"http://www.securityfocus.com/bid/103108","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1263","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1264","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/hapijs/hoek/commit/32ed5c9413321fbc37da5ca81a7cbab693786dee","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackerone.com/reports/310439","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://nodesecurity.io/advisories/566","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://snyk.io/vuln/npm:hoek:20180212","tags":["Exploit","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-3728","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}