Security Advisory

CVE-2026-32112

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-11 20:42:30

Last updated 2026-03-12 14:05:47

Assigner GitHub_M

State PUBLISHED

Description

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 operators 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.

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