CVE-2018-3722

Name: CVE-2018-3722
Creator: NVD / NIST
Published: 2018-06-07T02:29:08.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.04%

Last modified Jun 17, 2026

CVE-2018-3722 is a vulnerability of currently unknown severity. merge-deep node module before 3.0.1 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.. EPSS estimates a 2.04% chance of exploitation in the next 30 days.

Description

merge-deep node module before 3.0.1 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.

Metrics

EPSS Probability

2.04%

78.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-471

Affected Software

Vendor	Product	Versions
Merge-Deep Project	Merge-Deep	< 3.0.1

References

https://github.com/jonschlinkert/merge-deep/commit/2c33634da7129a5aefcc262d2fec2e72224404e5Patch, Third Party Advisory
https://hackerone.com/reports/310708Exploit, Third Party Advisory
https://github.com/jonschlinkert/merge-deep/commit/2c33634da7129a5aefcc262d2fec2e72224404e5Patch, Third Party Advisory
https://hackerone.com/reports/310708Exploit, Third Party Advisory

Timeline

Published: Jun 7, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3722?

How severe is CVE-2018-3722?

Severity scoring for CVE-2018-3722 is pending analysis. The EPSS model estimates a 2.04% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3722?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-3722?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST