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CVE-2026-66061

Home Assistant: iOS Companion app forwards NFC/QR tag scans without confirmation, enabling silent automation execution

Published: Aug 7, 2026Updated: Aug 7, 2026 Sources: CVE List NVDCWE-862
7.1HIGH
NVD MITRE
EPSS Score
0.1%
Top 98.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.5.0, the iOS Companion app treats tag links (NFC or QR) delivered through an OS-level routing mechanism such as iOS universal links 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 has been fixed in version 2026.5.0.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:CC:NI:HA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-862

Affected Products

home-assistant
oss-projectaka homeassistant, home assistant, home-assistant.io
coreOn-prem
ICS / OT / IoT / smart-home

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://github.com/home-assistant/core/security/advisories/GHSA-j23v-9672-677j
github.com
https://github.com/home-assistant/iOS/commit/45e05e6666c74fdbea44cc4d6fb103043fff6fd9
github.com

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