CVE-2026-59177

HighCVSS 8.8

Published: 28/10/2026(UTC)Updated: 02/11/2026(UTC)Translated: 28/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Elevated risk

1.17%

67th percentile - higher than 67% of all known CVEs

Summary

In ESPHome Device Builder Dashboard prior to 1.0.10, the Home Assistant add-on's trusted ingress site binds to 0.0.0.0 while skipping dashboard authentication, and host networking required for mDNS exposes it on the LAN interface. Any device on the local network can connect directly to the ingress port, bypass the supervisor, and obtain the full dashboard without credentials.

Risk Assessment

A device on the local network can obtain the full dashboard without authentication, enabling Python and shell execution and access to configuration and data files. This can compromise the Home Assistant configuration and managed ESPHome devices.

Recommendation

Update ESPHome Device Builder Dashboard to version 1.0.10 or later and restrict LAN access to the ingress port.

Other vulnerabilities in ESPHome Device Builder Dashboard

CVE-2026-59178Critical
In ESPHome Device Builder Dashboard prior to version 1.0.12, authentication environment variables were renamed from $USERNAME/$PASSWORD to $ESPHOME_USERNAME/$ESPHOME_PASSWORD with no fallback. As a result, instances protected with the old names lost authentication after upgrade and the dashboard became open to anyone who could reach its port. The issue is fixed in 1.0.12, which restores the old names as a deprecated fallback with a startup warning.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS