CVE-2026-54318
7.1 · HIGHOverview
CVE-2026-54318 is a high-severity vulnerability affecting home-assistant home_assistant_companion. It was published on June 23, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Home Assistant is open source home automation software that puts local control and privacy first. Prior to 2026.5.3, the LocationSensorManager BroadcastReceiver is exported with no permission. Any installed app, with zero runtime permissions, can broadcast a forged Google Play Services LocationResult directly to it; the receiver trusts the extra and forwards it to the user's Home Assistant server as the device's real location. This bypasses Android's developer-mode "Mock Location" gate and allows a local malicious app to drive zone-based automations (unlock door / disarm alarm / open garage) by faking the user's GPS position. This vulnerability is fixed in 2026.5.3.
Remediation
Check the references section for vendor advisories and patches from home-assistant. Update home_assistant_companion to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| home-assistant | home_assistant_companion | >= 0, < 2026.5.3 | Affected |
Frequently Asked Questions
What is CVE-2026-54318?
CVE-2026-54318 is a high-severity vulnerability affecting home-assistant home_assistant_companion. It was published on June 23, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
How severe is CVE-2026-54318?
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-54318?
Check the references section for vendor advisories and patches from home-assistant. Update home_assistant_companion to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-54318?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-54318 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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