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 ↗

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

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

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