Vulnerability · Published Jun 23, 2026 · Assigned by GitHub_M

CVE-2026-54317Home Assistant: Konnected alarm-panel switch state and zone topology disclosed to unauthenticated actors on the LAN

High 7.6

In plain English

A high-severity information exposure in core from home-assistant. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.3%top 76.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Home Assistant is open source home automation software that puts local control and privacy first. Prior to 2026.6.0, the Konnected integration registers an HTTP endpoint, KonnectedView (homeassistant/components/konnected/__init__.py), that is marked as not requiring authentication (requires_auth = False). A comment next to that line says auth is instead handled "via the access token from configuration." That promise is only half true. Write requests (POST and PUT) are handled by update_sensor(), which does check the request's Authorization: Bearer <token> header against the integration's stored access tokens (using hmac.compare_digest). Read requests (GET) are handled by a separate get() method that has no authentication check at all. This vulnerability is fixed in 2026.6.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	homeassistant	2026.6.0	GHSA-x84v-g949-293w
PyPI	homeassistant	2026.6.0	PYSEC-2026-241

Affected products (as reported)

Vendor	Product	Versions
home-assistant	core	< 2026.6.0

Weakness: CWE-200, CWE-306 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

References

https://github.com/home-assistant/core/security/advisories/GHSA-x84v-g949-293w x_refsource_CONFIRM