What is CVE-2026-32112?

CVE-2026-32112 is a medium-severity vulnerability in Homeassistant-ai Ha-mcp, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-03-11.

How severe is CVE-2026-32112?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in Homeassistant-ai Ha-mcp

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 operat…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Homeassistant-ai Ha-mcp — versions < 7.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/homeassistant-ai/ha-mcp/security/advisories/GHSA-pf93-j98v-25pv (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-32112?: CVE-2026-32112 is a medium-severity vulnerability in Homeassistant-ai Ha-mcp, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-03-11.
How severe is CVE-2026-32112?: Medium severity. CVSS v3 base score is 6.8 out of 10.