CVE-2026-32111 Details
Description
ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form (beta feature) accepts a user-supplied ha_url and makes a server-side HTTP request to {ha_url}/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network reconnaissance via an error oracle. Two additional code paths in OAuth tool calls (REST and WebSocket) are affected by the same primitive. The primary deployment method (private URL with pre-configured HOMEASSISTANT_TOKEN) is not affected. This vulnerability is fixed in 7.0.0.
A vulnerability in ha-mcp versions through 6.7.2 allows for internal network reconnaissance via an error oracle. The issue arises in the OAuth consent form, which accepts a user-supplied URL and makes a server-side HTTP request to that URL's API config endpoint without proper validation. This lack of validation enables an unauthenticated attacker to submit arbitrary URLs and glean information about the internal network. Additionally, two other code paths in OAuth tool calls (REST and WebSocket) are impacted by the same vulnerability. The primary deployment method, which uses a private URL with a pre-configured HOMEASSISTANT_TOKEN, is not affected.
Users are advised to upgrade to ha-mcp version 7.0.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 12, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/homeassistant-ai/ha-mcp/security/advisories/GHSA-fmfg-9g7c-3vq7 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| homeassistant-ai home assistant mcp server | < 7.0.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 17, 2026 | Initial Analysis | [email protected] |
| Mar 11, 2026 | New CVE Received | [email protected] |