ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| homeassistant-ai | ha-mcp | affected |
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Homeassistant-ai | Ha-mcp |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-fmfg-9g7c-3vq7 | ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.325% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Homeassistant-ai home Assistant Mcp Server
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| CPEs | cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Homeassistant-ai home Assistant Mcp Server
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Homeassistant-ai
Homeassistant-ai ha-mcp |
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| Vendors & Products |
Homeassistant-ai
Homeassistant-ai ha-mcp |
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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