CVE-2026-71259ESPHome external_components file:// Scheme Validation Bypass Leading to Remote Code Execution

Descripción

ESPHome through 2026.7.0-dev contains an operator-precedence bug in the cv.url validator in esphome/config_validation.py. Because binds tighter than , any file: URI passes validation regardless of netloc. This validator gates the field of the external_components YAML directive's git source schema, which is passed to (git supports file:// natively).

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/esphome/esphome third-party-advisory
• https://github.com/esphome/esphome/blob/dev/esphome/config_validation.py third-party-advisory