What is CVE-2026-32111?

CVE-2026-32111 is a medium-severity vulnerability in Homeassistant-Ai Ha-Mcp, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-03-11.

How severe is CVE-2026-32111?

Medium severity. CVSS v3 base score is 5.3 out of 10.

SSRF in Homeassistant-Ai Ha-Mcp

CVE-2026-32111

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (20.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Homeassistant-ai Ha-mcp — versions < 7.0.0
Homeassistant-ai Home_assistant_mcp_server

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-32111?: CVE-2026-32111 is a medium-severity vulnerability in Homeassistant-Ai Ha-Mcp, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-03-11.
How severe is CVE-2026-32111?: Medium severity. CVSS v3 base score is 5.3 out of 10.