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CVE-2024-27081 — ESPHome remote code execution via arbitrary file write

Affected: esphome

ESPHome is a system to control your ESP8266/ESP32. A security misconfiguration in the edit configuration file API in the dashboard component of ESPHome version 2023.12.9 (command line installation) allows authenticated remote attackers to read and write arbitrary files under the configuration directory rendering remote code execution possible. This vulnerability is patched in 2024.2.1.

GHSA-8p25-3q46-8q2p — ESPHome vulnerable to remote code execution via arbitrary file write

Affected: PyPI: esphome

### Summary Security misconfiguration in edit configuration file API in dashboard component of ESPHome version 2023.12.9 (command line installation) allows authenticated remote attackers to read and write arbitrary files under the configuration directory rendering remote code execution possible.

### Details It is possible to abuse this path traversal vulnerability both in command line installation and Home Assistant add-on, but it is possible to read and write files only under the configuration directory.

The vulnerability is present and exploitable in the command line installation, but it was not possible to confirm an impact in the home assistant add-on version.

### PoC <img width="482" alt="/edit?configuration=/config/.esphome/esphome.json" src="https://github.com/esphome/esphome/assets/115887876/d2da3180-976e-4bed-b4b9-35ac960a7fb4"> <br/>

### Impact The…

PYSEC-2026-1328 — ESPHome vulnerable to remote code execution via arbitrary file write

Affected: PyPI: esphome

The vulnerability is present and exploitable in the command line installation, but it was not possible to confirm an impact in the home assistant add-on version.

### PoC <img width="482" alt="/edit?configuration=/config/.esphome/esphome.json" src="https://github.com/esphome/esphome/assets/115887876/d2da3180-976e-4bed-b4b9-35ac960a7fb4"> <br/>

### Impact The…