CVE-2026-80427

Vulnerability Description

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.

CVSS Score

Related Weaknesses (CWE)

References

• https://github.com/nfriedly/node-bestzip
• https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc
• https://www.npmjs.com/package/bestzip
• https://www.vulncheck.com/advisories/bestzip-before-2.2.6-and-3.0-x-before-3.0.2
• https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc