Vibe codingMediumvc-g562

Subject Ai code reviewLevel Mid–Senior~14 minCommon in Security interviewsIndustries Software development

Question

An AI assistant wrote a small Python utility that converts an uploaded image using ImageMagick by shelling out. It works on your test files. What's the injection risk, what filename would trigger it, and how do you fix it?

python

1import os2def make_thumbnail(filename):3    os.system(f"convert uploads/{filename} -resize 200x200 thumbs/{filename}")

What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.

Learn the concepts

Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.