Why Cursor Keeps Writing Command Injection Into Your Code (CWE-78)
Article summary
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TL;DR AI editors love exec() with a template string, because that is what most tutorials show. Drop one user-controlled variable into that string and you have remote command execution. Switch to execFile / spawn with an argument array so no shell ever parses the input. I asked Cursor to add an image thumbnail endpoint to a side project last week. It gave me working code in about four seconds. It also gave me a way for any user to run shell commands on my server. Here is what it wrote: const {…
1Key Takeaways
- TL;DR AI editors love exec() with a template string, because that is what most tutorials show.
- Drop one user-controlled variable into that string and you have remote command execution.
- Switch to execFile / spawn with an argument array so no shell ever parses the input.
- I asked Cursor to add an image thumbnail endpoint to a side project last week.
2AIWedia Score
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that tL;DR AI editors love exec() with a template string, because that is what most tutorials show.
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