AIKIDO-2026-761465
bestzip is vulnerable to Argument Injection
84
High Risk
This Affects:
bestzipTL;DR
bestzip is a Node.js wrapper that builds an argument array for the system's native zip binary and passes user-supplied source file paths to it. It does not place the -- option terminator before the source list, so a source path beginning with - is parsed by native zip as an operational flag instead of a filename. The fix inserts -- before the expanded sources so all following tokens are treated strictly as filenames.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you pass untrusted source file paths to bestzip.
Background info
bestzip is vulnerable to Argument Injection in versions 0.0.1 - 2.2.5 and 3.0.0 - 3.0.1.
How to fix this
Upgrade the bestzip library to the patch version.
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