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2 vulnerabilities by nfriedly
CVE-2026-80427 (GCVE-0-2026-80427)
Vulnerability from nvd – Published: 2026-08-26 15:44 – Updated: 2026-08-26 16:03
VLAI
EPSS
VEX
Title
bestzip before 2.2.6 and 3.0.x before 3.0.2 Argument Injection via Missing Option Delimiter
Summary
bestzip builds the argument list for the system zip utility without separating options from operands. The destination archive path and the caller-supplied source paths are passed to the child process with no -- delimiter between them, so any source entry beginning with a hyphen is interpreted by zip as an option rather than a file name. zip accepts -T to test the finished archive and -TT to name the command used to perform that test, so a source list containing those two entries and a command string causes zip to run that command through a shell once the archive has been written. An application that passes a file name or path it received from an untrusted source into the bestzip API therefore executes a command of the supplier's choosing. Versions 2.2.6 and 3.0.2 add the delimiter.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 16:03 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nfriedly/node-bestzip | product |
| https://github.com/nfriedly/node-bestzip/security… | vendor-advisory |
| https://www.npmjs.com/package/bestzip | product |
| https://www.vulncheck.com/advisories/bestzip-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-26 00:00
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CVE-2026-80427 (GCVE-0-2026-80427)
Vulnerability from cvelistv5 – Published: 2026-08-26 15:44 – Updated: 2026-08-26 16:03
VLAI
EPSS
VEX
Title
bestzip before 2.2.6 and 3.0.x before 3.0.2 Argument Injection via Missing Option Delimiter
Summary
bestzip builds the argument list for the system zip utility without separating options from operands. The destination archive path and the caller-supplied source paths are passed to the child process with no -- delimiter between them, so any source entry beginning with a hyphen is interpreted by zip as an option rather than a file name. zip accepts -T to test the finished archive and -TT to name the command used to perform that test, so a source list containing those two entries and a command string causes zip to run that command through a shell once the archive has been written. An application that passes a file name or path it received from an untrusted source into the bestzip API therefore executes a command of the supplier's choosing. Versions 2.2.6 and 3.0.2 add the delimiter.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 16:03 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nfriedly/node-bestzip | product |
| https://github.com/nfriedly/node-bestzip/security… | vendor-advisory |
| https://www.npmjs.com/package/bestzip | product |
| https://www.vulncheck.com/advisories/bestzip-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-26 00:00
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