PYSEC-2026-2508 ha-mcp has XSS via Unescaped HTML in OAuth Consent Form

Summary 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...

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 haurl and makes a server-side HTTP request to haurl/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network...

Cross-site Scripting (XSS)

Overview ha-mcp is a Home Assistant MCP Server - Complete control of Home Assistant through MCP Affected versions of this package are vulnerable to Cross-site Scripting XSS in the OAuth consent form rendering process. An attacker can execute arbitrary JavaScript in the server operator's browser b...

EUVD-2026-11385

ha-mcp has XSS via Unescaped HTML in OAuth Consent Form...

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 operator to follow a crafted authorization URL could execute...

CVE-2026-32112 ha-mcp has XSS via Unescaped HTML in OAuth Consent Form

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...

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 operator to follow a crafted authorization URL could execute...

CVE-2026-32112 ha-mcp has XSS via Unescaped HTML in OAuth Consent Form

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...

CVE-2026-32112 ha-mcp has XSS via Unescaped HTML in OAuth Consent Form

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...

CVE-2026-32111 ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle

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 haurl and makes a server-side HTTP request to haurl/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network...

CVE-2026-32111 ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle

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 haurl and makes a server-side HTTP request to haurl/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network...

PT-2026-24838

Name of the Vulnerable Software and Affected Versions ha-mcp versions prior to 7.0.0 Description ha-mcp is a Home Assistant MCP Server. Prior to version 7.0.0, the OAuth consent form renders user-controlled parameters using Python f-strings without proper HTML escaping. This allows an attacker wh...