CVE-2026-87794

Published: Sep 9, 2026Modified: Sep 18, 2026Deferred

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.

References (7)

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

Timeline

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