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BREW-esphome-CVE-2021-41104

Affected: Homebrew: esphome

ESPHome is a system to control the ESP8266/ESP32. Anyone with web_server enabled and HTTP basic auth configured on version 2021.9.1 or older is vulnerable to an issue in which `web_server` allows over-the-air (OTA) updates without checking user defined basic auth username & password. This issue is patched in version 2021.9.2. As a workaround, one may disable or remove `web_server`.

EUVD-2026-31476

fkie_cve-2021-41104

GHSA-48mj-p7x2-5jfm — Basic auth bypass in esphome

Affected: PyPI: esphome

### Impact

Anyone with web_server enabled and HTTP basic auth configured on 2021.9.1 or older

`web_server` allows OTA update without checking user defined basic auth username & password

### Patches

Patch released in 2021.9.2

### Workarounds

Disable/remove `web_server`

gsd-2021-41104

PYSEC-2021-351

Affected: PyPI: esphome