CVE-2026-32112

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.

Risk Information

Base Score

4.7

MODERATE

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Score

Exploitation Probability

0.029

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2026-32111,CVE-2026-32112 are fixed in Python-ha-mcp 7.0.0	Windows
Vulnerabilities CVE-2026-32111,CVE-2026-32112 are fixed in Python-ha-mcp for linux 7.0.0	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234