Vulnerability Details CVE-2026-32112
ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form renders user-controlled parameters via Python f-strings with no HTML escaping. An attacker who can reach the OAuth endpoint and convince the server operator to follow a crafted authorization URL could execute JavaScript in the operator's browser. This affects only users running the beta OAuth mode (ha-mcp-oauth), which is not part of the standard setup and requires explicit configuration. This vulnerability is fixed in 7.0.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.3%
CVSS Severity
CVSS v3 Score 6.8
Products affected by CVE-2026-32112
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:1.0.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:1.0.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:1.0.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:1.0.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.0.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.1.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.2.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.3.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.3.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.3.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.4.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.4
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.5
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.6
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:2.5.7
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.0.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.0.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.4
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.5
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.1.6
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.2.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.2.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.2.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.2.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.3.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.3.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.3.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.4.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.4.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.4.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.4.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.5.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.5.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.6.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.6.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.6.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:3.7.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.0.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.0.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.1.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.10.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.4
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.5
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.6
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.7
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.8
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.11.9
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.12.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.13.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.14.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.14.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.14.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.15.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.15.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.16.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.16.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.16.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.17.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.17.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.18.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.18.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.18.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.19.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.2.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.20.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.21.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.22.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.22.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.3.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.4.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.5.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.6.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.4
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.5
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.6
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.7.7
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.8.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.8.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.8.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.8.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.8.4
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.8.5
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:4.9.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.2
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.3
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.4
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.5
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.0.6
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:5.1.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.0.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.1.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.2.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.3.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.3.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.4.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.5.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.6.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.6.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.7.0
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.7.1
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cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:6.7.2