CVE-2026-55844CWE-319

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

High · published June 29, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
16.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00258 · 16.6th percentile
Weakness
CWE-319 · Cleartext Transmission of Sensitive Information
Published
2026-06-29T14:19Z
EPSS history
Timeline
  • 29 JUN 14:19Z
    Home Assistant: iOS Companion App ignores internal SSID allowlist for connections – possible leak of access token and sensor data
    cvelistv5