A missing authorization vulnerability in Home Assistant core allows unauthenticated attackers to perform unauthorized actions, potentially impacting system integrity.

The application suffers from a missing authorization flaw (CWE-862) within its core components. This vulnerability allows an unauthenticated attacker to bypass intended security controls and execute unauthorized actions.

Successful exploitation allows an attacker to manipulate home automation settings or bypass security logic, potentially leading to unauthorized physical or digital access. With a CVSS score of 7.1, this vulnerability poses a significant risk to the availability and integrity of local automation environments, which are often used for security and access control.

Immediate Action: Update Home Assistant core to version 2026.5.0 or higher to resolve the authorization flaw.

Proactive Monitoring: Review access logs for unusual command execution patterns or requests originating from unauthorized sources.

Compensating Controls: Ensure the Home Assistant instance is not exposed to the public internet and utilize a VPN or authenticated reverse proxy for remote access.

Public Exploit Available: Unknown

Given the potential for unauthorized control over home automation systems, users should prioritize updating their instances to version 2026.5.0 immediately. Restricting network access to the Home Assistant dashboard remains a critical best practice to mitigate this and similar authorization risks.