CVE-2026-54317Public exploit

Unauthenticated alarm-state disclosure via unchecked GET requests

Published Jun 23, 2026 · Updated Jun 23, 2026

Information disclosure in Home Assistant Core before 2026.6.0 allows remote attackers on the LAN to read Konnected alarm-panel state. KonnectedView disables framework authentication, while its get() handler omits the Bearer-token check applied by update_sensor() to POST and PUT requests. Network access to port 8123 and a configured Konnected integration expose switch states, device identifiers, and zone topology; each successful GET also initiates a panel connection.

CVSS severity7.6
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Home Assistant Core before 2026.6.0 allows remote attackers on the LAN to read Konnected alarm-panel state. KonnectedView disables framework authentication, while its get() handler omits the Bearer-token check applied by update_sensor() to POST and PUT requests. Network access to port 8123 and a configured Konnected integration expose switch states, device identifiers, and zone topology; each successful GET also initiates a panel connection.

The record

CVE
CVE-2026-54317
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
Home Assistant
Product
Home Assistant Core
Classifications
CWE-200, CWE-306
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2026.6.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Home Assistant · Home Assistant Coreversion=< 2026.6.0

Published CVSS scores

7.6GitHub, Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-306Missing Authentication for Critical Function

Public exploit references

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Technologies

Your stack

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Your stack

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