CVE-2026-55844

Home Assistant: iOS Companion App ignores internal SSID allowlist for connections – possible leak of access token and sensor data

State: Published
Severity: 7.5 High
Published: Jun 29, 2026
Updated: Jun 30, 2026
Reserved: Jun 17, 2026

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Description

Home Assistant is open source home automation software that puts local control and privacy first. Prior to 2025.5.0, The iOS companion app ignores the SSID allowlist for internal networks. The app uses SSID to detect when to use the internal URL, but whenever the app cannot find any other URL to be used, it fallbacks to the internal URL as well, which can expose user's token when connected to a not secure network. This vulnerability is fixed in 2025.5.0.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-319 Cleartext Transmission of Sensitive Information

Affected Products

Product	Versions
corehome-assistant	< 2025.5.0Affected

References

https://github.com/home-assistant/core/security/advisories/GHSA-cm5v-547m-qh5h

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