Vulnerability Description
Line Desktop MCP is a project that, while unaffiliated with the official line-bot-mcp-server, allows users to directly operate the LINE Desktop application on Windows or Mac via MCP. `line-desktop-mcp` supports a `--http-mode` Streamable HTTP transport for use with clients such as n8n. In this mode the server binds to `0.0.0.0` and exposes the MCP `/mcp` endpoint without an MCP-layer authentication check. Prior to version 1.1.2, any network client that can reach the port can initialize a session, list tools, and call tools that read LINE Desktop chat history or send LINE messages through the already logged-in desktop application. Version 1.1.2 fixes the issue.
Related Weaknesses (CWE)
References
- https://github.com/dtwang/line-desktop-mcp/commit/680617894981ea93f8f6ceb51ecde7
- https://github.com/dtwang/line-desktop-mcp/security/advisories/GHSA-4hf8-5mjm-rf
FAQ
What is CVE-2026-49357?
CVE-2026-49357 is a documented vulnerability. Line Desktop MCP is a project that, while unaffiliated with the official line-bot-mcp-server, allows users to directly operate the LINE Desktop application on Windows or Mac via MCP. `line-desktop-mcp...
How severe is CVE-2026-49357?
CVSS scoring is not yet available for CVE-2026-49357. Check NVD for updates.
Is there a patch for CVE-2026-49357?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.