CVE-2026-71259

EUVD-2026-53344
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).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
TuranSecCNA
8.6 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 6.86%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
esphomeesphome
𝑥
≤ 2026.7.0
CNA
Common Weakness Enumeration
References
https://github.com/esphome/esphome
https://github.com/esphome/esphome/blob/dev/esphome/config_validation.py