CVE-2026-87794
Published:September 09, 2026
Updated:September 22, 2026
bestzip versions 2.2.6 and 3.0.2 contain an argument injection vulnerability in the nativeZip function that allows attackers to inject arbitrary arguments to the Info-ZIP backend. Attackers can supply a malicious destination path combined with crafted source entries to execute arbitrary commands with Node.js process privileges. Fixed in 2.2.7 and 3.0.3.
Affected Packages
https://github.com/nfriedly/node-bestzip.git (GITHUB):
Affected version(s) =v2.2.6 <v2.2.7Fix Suggestion:
Update to version v2.2.7https://github.com/nfriedly/node-bestzip.git (GITHUB):
Affected version(s) =v3.0.2 <v3.0.3Fix Suggestion:
Update to version v3.0.3bestzip (NPM):
Affected version(s) =2.2.6 <2.2.7Fix Suggestion:
Update to version 2.2.7bestzip (NPM):
Affected version(s) =3.0.2 <3.0.3Fix Suggestion:
Update to version 3.0.3Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.6
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
EPSS
Base Score:
0.19