---
title: "CVE-2026-59177: ESPHome Device Builder - Authentication Bypass"
description: "ESPHome Device Builder before version 1.0.10 binds the trusted Home Assistant ingress site to all interfaces, allowing unauthenticated clients with network access to the ingress port to access the dashboard without authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-59177/
---

# CVE-2026-59177 ESPHome Device Builder - Authentication Bypass

ESPHome Device Builder before version 1.0.10 binds the trusted Home Assistant ingress site to all interfaces, allowing unauthenticated clients with network access to the ingress port to access the dashboard without authentication.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-59177)

## Details

Type

Authentication Bypass

Impact

Information Disclosure, Data Tampering, Denial Of Service

CVSS vector

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

Published

28 October 2026

Updated

29 October 2026

Weakness

[CWE-1327](https://cwe.mitre.org/data/definitions/1327.html)

## Vendor fix

Upgrade the ESPHome add-on to a release bundling Device Builder 1.0.10 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-59177](https://nvd.nist.gov/vuln/detail/CVE-2026-59177)
- [https://github.com/esphome/device-builder/security/advisories/GHSA-vv4j-m4vr-f3g6](https://github.com/esphome/device-builder/security/advisories/GHSA-vv4j-m4vr-f3g6)
- [https://github.com/esphome/device-builder/pull/1565](https://github.com/esphome/device-builder/pull/1565)
- [https://github.com/esphome/device-builder/commit/b6387db3f8bf1d3df5771f40e9856b959ae4f6a1](https://github.com/esphome/device-builder/commit/b6387db3f8bf1d3df5771f40e9856b959ae4f6a1)
- [https://github.com/esphome/device-builder/releases/tag/1.0.10](https://github.com/esphome/device-builder/releases/tag/1.0.10)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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