Critical severity · published Jun 2, 2021
CVE-2021-26707
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
9.8
CVSS
1.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EP
E-series Performance Analyzer · Netapp
All versions, or not specified · source: NVD
ME
Merge-deep · Merge-deep Project
before 3.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26707
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26707
Patch
https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0008/
Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/
Product
https://www.npmjs.com/package/merge-deep
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