AIKIDO-2026-482004
spoom is vulnerable to OS Command Injection
78
High Risk
This Affects:
spoomTL;DR
Spoom::FileCollector#mime_type_for shells out to the file command by interpolating a scanned file's path into a single-quoted shell string. A file name that contains a single quote breaks out of that quoting, letting a crafted file name in the analyzed repository run arbitrary OS commands during the default spoom deadcode scan. The path reaching this call is normalized with cleanpath but never shell-escaped before use. The fix replaces the shell interpolation with Open3.capture2, passing the path as a separate process argument instead of through /bin/sh.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you run spoom deadcode over a repository containing files with untrusted names.
Background info
spoom is vulnerable to OS Command Injection in versions 1.2.2 - 1.8.8.
How to fix this
Upgrade the spoom library to the patch version.
Are You Affected?
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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