CVE-2018-3728

Exp

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: 2018-03-30 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-3728 is rated High Exploit Risk (84.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.23%). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.55% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-3728

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-3728

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.68% 4.23% +2.55%
2 2026-03-04 0.56% 1.68% +1.12%
3 2026-03-01 — 0.56% —

Full EPSS history (41 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-3728

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2018-3728

GitHub Security Advisory for CVE-2018-3728

OS Trackers for CVE-2018-3728

vendor priority summary link
debian unimportant CVE-2018-3728 unimportant priority: Debian including 1 source packages (node-hoek), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-3728
redhat low — https://access.redhat.com/security/cve/CVE-2018-3728
ubuntu medium CVE-2018-3728 medium priority: Ubuntu including 1 source packages (node-hoek), 20 status rows across 20 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 12, needs-triage 6, DNE 2. https://ubuntu.com/security/CVE-2018-3728

Affected software / configurations for CVE-2018-3728

Vendor Product Version Raw CPE
hapijs hoek < 4.2.0 cpe:2.3:a:hapijs:hoek:*:*:*:*:*:node.js:*:*
hapijs hoek >= 5.0.0, < 5.0.3 cpe:2.3:a:hapijs:hoek:*:*:*:*:*:node.js:*:*

References for CVE-2018-3728

cvelogic Threat Intelligence