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OpenAdvisories
High · 8.8 Scanner template CVE-2026-59177 EUVD-2026-112079GHSA-vv4j-m4vr-f3g6PYSEC-2026-3834

ESPHome Device Builder allows unauthenticated dashboard access via the HA add-on ingress site bound to all interfaces

Published Oct 28, 2026 · Updated Nov 2, 2026 · Assigned by GitHub_M

Description

ESPHome Device Builder Dashboard is a dashboard for the ESPHome home management software. Prior to 1.0.10, the `Home Assistant` add-on's trusted `ingress` site binds to `0.0.0.0` while intentionally skipping dashboard authentication because the supervisor is expected to authenticate requests upstream. Host networking, required for mDNS, also binds this no-auth site to the `Home Assistant` host's LAN interface. Any device on that local network can therefore connect directly to the `ingress` port, bypass the supervisor, and obtain the full dashboard without credentials or operator misconfiguration. Dashboard capability includes compile-time Python execution through `external_components:`, shell execution through compile and validation subprocesses, and arbitrary access to configuration and data files, compromising the mounted `Home Assistant` configuration and managed ESPHome devices. The standalone Docker dashboard and the password-gated public port 6052 are not affected. This issue is fixed in version 1.0.10.

Affected products

VendorProductAffectedFixed
esphome device-builder < 1.0.10 —

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI esphome-device-builder < 1.0.10 1.0.10 GHSA-vv4j-m4vr-f3g6

References