CVE-2026-71259

8.6 highEPSS 0.2%

High (8.6). EPSS 0.2% chance of exploitation in the next 30 days.

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).

Severity

CVSS 3.1

8.6 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-184
Published: 2026-08-05
Modified: 2026-08-26
Record from: the NVD, synced 2026-10-19

References

https://github.com/esphome/esphome
https://github.com/esphome/esphome/blob/dev/esphome/config_validation.py

Check your stack JSON