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CVE-2026-55844

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

Published: Jun 29, 2026Updated: Jun 30, 2026 Sources: CVE List NVDCWE-319
7.5HIGH
NVD MITRE
EPSS Score
0.2%
Top 94.4%
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 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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-319

Affected Products

home-assistant
oss-projectaka homeassistant, home-assistant.io, home assistant
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
Collection
Credential Access
View detailed technique mapping

References

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

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