Will It Vibe?Shell command built with interpolation (Ruby)
Part of Security, which counts for 30% of the overall score. When this check fires it deducts 8 points from that category, once per scan, no matter how many places it turns up.
What it detects
A system() call, backtick command, or %x{} interpolates #{...} into the command, which is a command injection risk when the value is user-controlled.
Why it matters
system(), backticks, and %x{} run their argument through a shell, so interpolating #{value} lets a crafted value inject extra commands. This is high impact with user input. It is a heuristic because the interpolated value may be a trusted constant.
How to fix it
Use the multi-argument form of system, which does not invoke a shell: system("ping", "-c", "1", host). For captured output use Open3.capture2/3 with separate arguments. Do not interpolate input into a shell string.
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