← Vulnerability feed

Vulnerability record · CVE-2026-71259 · published 5 August 2026

CVE-2026-71259: ESPHome through 2026.7.0-dev contains an operator-precedence bug in the cv.url validator in esphome/config_val…

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).

8.6 CVSS 3.1 High EPSS 0.17% · top 93.9% CWE-184 · CWE-184 Deferred
8.6CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
26 Aug 2026Last modified by NVD

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).

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

References

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

Track CVE-2026-71259 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-49869Kestra OSS auth bypass via path suffix match enables RCEKestra OSS AuthenticationFilter whitelists the public config endpoint using request.getPath().endsWith("/configs"), a suffix match instead of an exac…KEVEPSS 2.1%analysed9.2CVE-2024-5217ServiceNow Now Platform input validation flaw enables unauthenticated RCEServiceNow's Washington DC, Vancouver, and earlier Now Platform releases contain an input validation vulnerability (CWE-184 incomplete list of disall…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2026-71259), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.