CVE-2018-3728

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 4.2% (90th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.2%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
46
EG Risk 46/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation4% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
4.2%
EPSS %ILE
90th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

March 30, 2018

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Aug 18, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: redhat, github_commit.
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2018:1264
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2018:1263
generic

CVE-2018-3728 - PSIRT.COM

http://www.securityfocus.com/bid/103108
generic🔴 Active Exploitation

Prototype Pollution in hoek | CVE-2018-3728 | Snyk

https://snyk.io/vuln/npm:hoek:20180212
generic

HackerOne

https://hackerone.com/reports/310439
github_commit Patch Available

commit 32ed5c941332 (hapijs/hoek)

Patch available: hapijs/hoek v9.1.1 (contains commit 32ed5c941332)

https://github.com/hapijs/hoek/commit/32ed5c9413321fbc37da5ca81a7cbab693786dee

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatquay/quay-rhel8:v3.6.0-622021-10-19redhat
redhatrhmap46/wildcard-proxy:1.0.0-172018-04-30redhat
redhatsupervisor-0:3.1.3-3.el7map2018-04-30redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
node-hoek—
  • every version up to 5.0.3-1: fixed in 5.0.3-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-hoek—
  • every version up to 5.0.3-1: fixed in 5.0.3-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-hoek—
  • every version up to 5.0.3-1: fixed in 5.0.3-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-hoek—
  • every version up to 5.0.3-1: fixed in 5.0.3-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
hoek—
  • 5.0.0 up to 5.0.3: fixed in 5.0.3
  • every version up to 4.2.1: fixed in 4.2.1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 165 total refreshes for this CVE.

  1. 2026-10-09 20:02 UTCEPSS rescore
  2. 2026-10-08 16:36 UTCEPSS rescore
  3. 2026-10-07 23:42 UTCEPSS rescore
  4. 2026-10-06 15:12 UTCEPSS rescore
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  7. 2026-10-01 19:44 UTCEPSS rescore
  8. 2026-09-30 14:59 UTCEPSS rescore
  9. 2026-09-30 10:01 UTCEG score recompute
  10. 2026-09-29 07:45 UTCOSV refresh
  11. 2026-09-28 13:45 UTCEPSS rescore
  12. 2026-09-27 13:40 UTCEPSS rescore
  13. 2026-09-26 15:53 UTCEPSS rescore
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  1. 2026-09-09 14:23 UTCOSV refresh
  2. 2026-09-07 15:57 UTCEPSS rescore
  3. 2026-09-06 13:43 UTCEPSS rescore
  4. 2026-09-05 15:24 UTCEPSS rescore
  5. 2026-09-04 13:56 UTCEPSS rescore
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  8. 2026-09-01 13:49 UTCEPSS rescore
  9. 2026-09-01 03:32 UTCEPSS rescore
  10. 2026-08-28 21:36 UTCEPSS rescore
  11. 2026-08-27 14:21 UTCEPSS rescore
  12. 2026-08-26 14:42 UTCEPSS rescore
  13. 2026-08-25 13:44 UTCEPSS rescore
  14. 2026-08-22 20:37 UTCOSV refresh
  15. 2026-08-21 23:45 UTCEPSS rescore
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  18. 2026-08-18 13:44 UTCEPSS rescore
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  20. 2026-08-16 14:51 UTCEPSS rescore
  21. 2026-08-16 02:10 UTCEPSS rescore
  22. 2026-08-15 01:26 UTCEPSS rescore
  23. 2026-08-13 21:56 UTCEPSS rescore
  24. 2026-08-12 13:46 UTCEPSS rescore
  25. 2026-08-09 13:43 UTCEPSS rescore
  26. 2026-08-08 16:32 UTCEPSS rescore
  27. 2026-08-07 16:23 UTCEPSS rescore
  28. 2026-08-07 00:04 UTCOSV refresh
  29. 2026-08-06 13:42 UTCEPSS rescore
  30. 2026-08-05 19:13 UTCEPSS rescore
  31. 2026-08-04 15:05 UTCEPSS rescore
  32. 2026-08-02 02:23 UTCEPSS rescore
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  36. 2026-07-28 15:32 UTCEPSS rescore
  37. 2026-07-25 14:14 UTCEPSS rescore
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  39. 2026-07-24 14:14 UTCEPSS rescore
  40. 2026-07-23 14:15 UTCEPSS rescore
  41. 2026-07-23 01:36 UTCEG score recompute
  42. 2026-07-22 22:16 UTCEG score recompute
  43. 2026-07-22 14:05 UTCEPSS rescore
  44. 2026-07-21 15:22 UTCEPSS rescore
  45. 2026-07-21 15:18 UTCOSV refresh
  46. 2026-07-20 17:04 UTCEPSS rescore
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  48. 2026-07-19 14:28 UTCEPSS rescore
  49. 2026-07-19 02:26 UTCEPSS rescore
  50. 2026-07-19 02:26 UTCEPSS rescore
  51. 2026-07-16 16:59 UTCEPSS rescore
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  63. 2026-07-08 15:11 UTCEPSS rescore
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  70. 2026-07-04 10:56 UTCOSV refresh
  71. 2026-07-04 06:28 UTCEPSS rescore
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  73. 2026-07-02 16:54 UTCEPSS rescore
  74. 2026-07-01 15:03 UTCEPSS rescore
  75. 2026-07-01 15:03 UTCEPSS rescore

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Same product

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Debian:11:node-hoek

Frequently asked(5)

What is CVE-2018-3728?
CVE-2018-3728 is a high vulnerability published on March 30, 2018. 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…
When was CVE-2018-3728 disclosed?
CVE-2018-3728 was first published on March 30, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-3728 actively exploited?
CVE-2018-3728 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.2% probability of exploitation in the next 30 days (90th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-3728?
CVE-2018-3728 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-3728?
A fix for CVE-2018-3728 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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