Detections
Analytics

CVE-2026-87794

high

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.

References

https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-xhwx-rch4-ph2v

https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc

https://www.vulncheck.com/advisories/bestzip-2.2.6-and-3.0.2-argument-injection-via-the-native-zip-destination

https://www.npmjs.com/package/bestzip

https://github.com/nfriedly/node-bestzip/commit/2adb637b0acb05b8475de7db5af4b86ffcf40aaf

https://github.com/nfriedly/node-bestzip/blob/v3.0.2/lib/bestzip.js

https://github.com/nfriedly/node-bestzip

Details

Source: Mitre, NVD

Published: 2026-09-09

Updated: 2026-09-10

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.4

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base 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

Severity: High

EPSS

EPSS: 0.00188