CVE-2026-55844

HIGH

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0016
EPSS Percentile 5.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-319
Status published
Products (1)
home-assistant/core < 2025.5.0
Published Jun 29, 2026
Tracked Since Jun 29, 2026