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CVE-2026-66060 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.5.3, the Companion app treats tag links (NFC or QR) delivered through an OS-level routing mechanism as if they were physically scanned, without validating the calling app or prompting the user. As a result, any untrusted app on the device can forward an arbitrary tag to Home Assistant, causing it to execute the associated automation as though a legitimate user had scanned an authorized tag. This allows silent, unattended automation execution by untrusted local callers. This issue is fixed in version 2026.8.1.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CNA: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/home-assistant/core/security/advisories/GHSA-2xqv-hwrf-983f	CISA-ADP	AdvisoryExploitRemedyVendor
https://github.com/home-assistant/android/commit/968b49c58e4eba4d06371a3f6e73198ec6c8d4a7	[email protected]	Source CodeVendor
https://github.com/home-assistant/core/security/advisories/GHSA-2xqv-hwrf-983f	[email protected]	AdvisoryExploitRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-862	Missing Authorization	[email protected]

Affected Products

Product	Versions
Home Assistant	< 2026.5.3 (semver)
CPE cpe:2.3:a:home-assistant:home-assistant:::::::: Remediation Upgrade: 2026.8.1moderate effort
Home Assistant Companion	< 2026.5.3 (semver)
CPE cpe:2.3:a:home-assistant:home_assistant_companion::::::iphone_os::* cpe:2.3:a:home-assistant:home_assistant_companion:::::::: cpe:2.3:a:home-assistant:home_assistant_companion::::::android::* cpe:2.3:a:home-assistant:home_assistant_companion::::::macos::* Remediation Upgrade: 2026.8.1moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 13, 2026	CVE Modified	CISA-ADP
Aug 7, 2026	New CVE Received	[email protected]