External risk intelligence

Bluehood API Unauthenticated Access to Bluetooth Data and State

CVE advisorySeverity: CRITICAL (CVSS 9.1)

CVE-2026-49994

Bluehood is a tool for monitoring local Bluetooth activity, which is typically deployed in internal or local network environments to interface with nearby hardware. While the application exposes a web dashboard and API that could be reachable over a network, it is not primarily designed as an internet-facing edge service or public-facing gateway.

Missing Authentication

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A security vulnerability was identified in Bluehood, a tool for monitoring local Bluetooth activity. Versions prior to 0.7.1 allowed unauthenticated network access to sensitive data and application settings, meaning an attacker could potentially view Bluetooth tracking information and alter critical configurations without proper authorization. This issue has since been resolved in version 0.7.1.

Unauthenticated access to Bluetooth data and settings.
Critical configurations could be altered remotely.
Confirm if Bluehood is in use and update if necessary.

Attack Path

How an attacker could exploit the issue

An attacker on the network could access the Bluehood application's dashboard port to read Bluetooth tracking data and change its settings without needing to log in. This is because certain API endpoints, which handle device settings and notes, did not properly check for active user sessions, allowing unauthorized access to sensitive information and application configurations.

Network access required
Unauthenticated API calls trigger
Read sensitive data and modify settings

Live Threat

Current exploitation, exposure, and threat context

A network attacker could access and modify Bluetooth tracking data and application settings when the `auth_enabled` option is set but session validation is not enforced. This could allow an attacker to read sensitive Bluetooth activity and alter critical application configurations without authentication.

Bluetooth tracking data and application state.
Network attacker can access API endpoints.
Unauthorized modification of sensitive data.

Operational Fix

Recommended remediation, mitigation, and detection steps

Determining ownership requires identifying where Bluehood is deployed and confirming its reachability and criticality. Application owners or platform teams are likely responsible for this Bluetooth monitoring tool, with security and network teams involved in assessing exposure. The immediate next step is to locate all instances, confirm their business impact and network exposure, and then assign remediation based on risk, potentially involving vendor coordination for updates.

Application or platform teams own the issue.
Verify Bluehood deployment and network reachability.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

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Frequently asked questions

What is Bluehood?

Bluehood is a specialized software tool designed to monitor and track local Bluetooth activity. Users typically deploy it to interface with nearby hardware, manage device groups, and maintain logs of Bluetooth device interactions within their immediate environment.

What does CVE-2026-49994 mean?

This CVE describes a Missing Authentication for Critical Function (CWE-306) and a Missing Authorization (CWE-862). Essentially, the software failed to verify user identity for its API endpoints. Even when authentication was enabled, the system did not enforce session checks on these background pathways, allowing unauthorized access to settings and data.

How is this vulnerability triggered?

An attacker triggers this by sending network requests directly to the application's API endpoints on the dashboard port. This bypasses the need for a session cookie entirely. Notably, simply viewing the main HTML dashboard is not required; the bug specifically affects the underlying API handlers, meaning any unauthenticated request to these specific functional paths succeeds.

Is my Bluehood instance at risk?

Halo Surface Signal indicates that while Bluehood is usually deployed in internal or local networks, any instance reachable over a network is potentially at risk. If your dashboard or API port is accessible to others on your network, they could interact with your Bluetooth data. It is less likely to be at risk if the application is strictly isolated from all network traffic.

How do I fix this issue?

You should update your Bluehood software to version 0.7.1 or later. This version patches the vulnerability by ensuring that all API endpoints properly validate user sessions. If you cannot update immediately, ensure that access to the dashboard port is strictly restricted at the network level to prevent unauthorized communication with the API.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.