Security vulnerabilities and automated fixes for devsecops issues
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A critical command injection vulnerability was discovered and patched in `espotabatch.py`, an OTA (Over-The-Air) batch deployment script that used `subprocess.call()` with `shell=True`, allowing attackers to execute arbitrary OS commands by injecting shell metacharacters into external inputs. This fix eliminates the attack surface by sanitizing subprocess calls and removing the dangerous shell interpretation layer. Understanding this vulnerability is essential for any developer working with Pyth