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.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/jonschlinkert/merge-deep/commit/2c33634da7129a5aefcc262d2fec2e72224404e5
Exploit, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/310708
Scores
CVSS v3
8.8
EPSS
0.0047
EPSS Percentile
64.6%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-471
Status
published
Products (2)
merge-deep_project/merge-deep
< 3.0.1
npm/merge-deep
0 - 3.0.1npm
Published
Jun 07, 2018
Tracked Since
Feb 18, 2026