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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2026-71259

ESPHome external_components file:// Scheme Validation Bypass Leading to Remote Code Execution

Description

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).

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

esphome esphome

Default version status: unaffected

  • 0 to ≤ 2026.7.0affected

References