CVE-2018-3721

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith 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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-471 CWE-1321

Affected software

Vendor	Product	Versions
HackerOne	lodash node module	Versions before 4.17.5

References

https://github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4aPatch
https://hackerone.com/reports/310443Exploit, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190919-0004/Third Party Advisory
https://github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4aPatch
https://hackerone.com/reports/310443Exploit, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190919-0004/Third Party Advisory

Timeline

Published: Jun 7, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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