Description
The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-pollution attacks against applications using this library.
References (4)
Core 4
Core References
Product, Third Party Advisory x_refsource_misc
https://www.npmjs.com/package/merge-deep
Patch, Third Party Advisory x_refsource_misc
https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5
Third Party Advisory x_refsource_misc
https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210716-0008/
Scores
CVSS v3
9.8
EPSS
0.0109
EPSS Percentile
78.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-1321
Status
published
Products (3)
merge-deep_project/merge-deep
< 3.0.3
netapp/e-series_performance_analyzer
npm/merge-deep
0 - 3.0.3npm
Published
Jun 02, 2021
Tracked Since
Feb 18, 2026