CVE-2026-59177 (CVSS 8.8)

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.

Is your site exposed to CVE-2026-59177?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0117

Probability of exploitation

0.68%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-1327 CWE-1327

References

Other References

https://github.com/esphome/device-builder/commit/b6387db3f8bf1d3df5771f40e9856b959ae4f6a1 https://github.com/esphome/device-builder/pull/1565 https://github.com/esphome/device-builder/releases/tag/1.0.10 https://github.com/esphome/device-builder/security/advisories/GHSA-vv4j-m4vr-f3g6

Frequently Asked Questions

What is CVE-2026-59177? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-59177? +

CVE-2026-59177 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0117, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-59177? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-0481

Unrestricted IP address binding in the AMD Device Metrics Exporter (ROCm ecosystem) could allow a remote attacker to perform unauthorized …

CVE-2026-72924

GitHub CLI (gh) is GitHub's official command line tool. Versions 2.28.0 through 2.97.0 bind the local listener created by gh …

CVE-2026-97849

The embedded Derby network service ignores its configured bind address and listens on all network interfaces. When the service is …

CVE-2026-111249

The development-time LiveReload support listens on all network interfaces without authentication and accepts websocket connections from any origin. A network …

CVE-2025-61934 10.0

A binding to an unrestricted IP address vulnerability was discovered in Productivity Suite software version v4.4.1.19. The vulnerability allows an …

CVE-2026-82456 10.0

argocd-mcp 0.8.0 binds its HTTP transport to every network interface and accepts MCP sessions without requiring caller credentials when ARGOCD_API_TOKEN …