CVE-2026-71259 — ESPHome external_components file:// Scheme Validation Bypass Leading to Remote Code Execution
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 valid…
Published: 2026-08-05 · CVSS: 8.6 · CVSS 3.1
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).
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7