Vulnerability DatabaseCVE-2026-71259
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CVE-2026-71259
Published:August 05, 2026
Updated:August 31, 2026
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).
Related Resources (4)
https://github.com/esphome/esphome/blob/dev/esphome/config_validation.py
https://nvd.nist.gov/vuln/detail/CVE-2026-71259
https://github.com/esphome/esphome
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71259.json
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CVSS v4
Base Score:
9.3
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.6
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Incomplete List of Disallowed Inputs
CWE-184
EPSS
Base Score:
0.12