HOME VULNERABILITIESCVE-2018-3720

HIGH

CVE-2018-3720

CWE-471Published: June 7, 2018· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

assign-deep node module before 0.4.7 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, 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.

Technical Analysis

CVE-2018-3720 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

assign-deep_project1 product(s)

assign-deep

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/jonschlinkert/assign-deep/commit/19953a8c089b0328c470acaaaf6accdfcb34da11

PATCHhttps://github.com/jonschlinkert/assign-deep/commit/19953a8c089b0328c470acaaaf6accdfcb34da11

ADVISORYhttps://hackerone.com/reports/310707

ADVISORYhttps://hackerone.com/reports/310707

All References (4)

→

https://github.com/jonschlinkert/assign-deep/commit/19953a8c089b0328c470acaaaf6accdfcb34da11Patch · Third Party Advisory

→

https://hackerone.com/reports/310707Exploit · Third Party Advisory

→

https://github.com/jonschlinkert/assign-deep/commit/19953a8c089b0328c470acaaaf6accdfcb34da11Patch · Third Party Advisory

→

https://hackerone.com/reports/310707Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2018-3720

CVSS Score8.8 / 10

SeverityHIGH

WeaknessCWE-471

CISA KEVNo

Affected1 vendor(s)

PublishedJun 7, 2018

Related CVEs (CWE-471)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2018-3720 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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