Python
CVE-2026-32112
MEDIUM
GHSA-pf93-j98v-25pv
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
AnalysisAI
Medium severity vulnerability in Home Assistant MCP. #
Technical ContextAI
Vulnerability Type: Cross-Site Scripting (XSS) (CWE-79) CVSS 3.1: 6.8/10.0 — Attack Vector: Network | Complexity: High | Privileges Required: None | User Interaction: Required Attack Techniques: Xss Source: https://github.com/homeassistant-ai/ha-mcp Cross-site scripting allows injection of malicious scripts that execute in victims' browsers, potentially stealing sessions or credentials.
RemediationAI
Security advisories:
- https://github.com/homeassistant-ai/ha-mcp/security/advisories/GHSA-pf93-j98v-25pv
Update to the latest patched version as soon as possible.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
Leaving vuln.today