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Vulnerabilities

CVE-2026-49357 | BDVDB-2026-341810 Detail

dtwangline-desktop-mcp

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.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

  • CWE-306 Missing Authentication for Critical Function
  • CWE-862 Missing Authorization

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.
  2. Version 2Most recent update recorded in the CVE List.