What is CVE-2026-71259?
CVE-2026-71259 is an operator-precedence bug in the `cv.url()` validator of ESPHome up to version 2026.7.0-dev. Due to `and` binding tighter than `or`, any `file:` URI bypasses validation regardless of other conditions, potentially compromising the security mechanism. Users are advised to update ESPHome to the latest stable release.
Azərbaycanca: CVE-2026-71259 ESPHome-un 2026.7.0-dev daxil olmaqla bütün versiyalarında `cv.url()` validatorunda operator üstünlüyü səhvidir. `and` operatorunun `or`-dan daha yüksək prioritetə malik olması səbəbindən istənilən `file:` URI-si yoxlamadan keçir, bu isə təhlükəsizlik mexanizmini sıradan çıxara bilər. İstifadəçilərə ESPHome-u ən son stabil versiyaya yeniləmək tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-20
FAQ2
What is CVE-2026-71259?
CVE-2026-71259 is an operator-precedence bug in the `cv.url()` validator of ESPHome up to version 2026.7.0-dev. Due to `and` binding tighter than `or`, any `file:` URI bypasses validation.
How can I protect against this security issue?
Users are advised to update ESPHome to the latest stable release.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.