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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
nfriedly bestzip unaffected
Version Status Constraints
2.2.6 affected < 2.2.7
3.0.2 affected < 3.0.3

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Project Subscriptions

Vendors Products
Bestzip Project Subscribe
Bestzip Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/nfriedly/node-bestzip cve-icon cve-icon
https://github.com/nfriedly/node-bestzip/blob/v3.0.2/lib/bestzip.js cve-icon cve-icon
https://github.com/nfriedly/node-bestzip/commit/2adb637b0acb05b8475de7db5af4b86ffcf40aaf cve-icon cve-icon
https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc cve-icon cve-icon
https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-xhwx-rch4-ph2v cve-icon cve-icon
https://www.npmjs.com/package/bestzip cve-icon cve-icon
https://www.vulncheck.com/advisories/bestzip-2.2.6-and-3.0.2-argument-injection-via-the-native-zip-destination cve-icon cve-icon
History

Wed, 09 Sep 2026 10:15:00 +0000

Type Values Removed Values Added
Description 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.
Title bestzip 2.2.6 and 3.0.2 Argument Injection via the Native Zip Destination
First Time appeared Bestzip Project
Bestzip Project bestzip
Weaknesses CWE-88
CPEs cpe:2.3:a:bestzip_project:bestzip:*:*:*:*:*:*:*:*
Vendors & Products Bestzip Project
Bestzip Project bestzip
References
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-09T10:07:27.925Z

Reserved: 2026-09-09T09:37:54.271Z

Link: CVE-2026-87794

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-09T10:22:34.397

Modified: 2026-09-09T10:22:34.397

Link: CVE-2026-87794

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T11:30:09Z

Weaknesses