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    1 vulnerability by dtwang

    CVE-2026-49357 (GCVE-0-2026-49357)

    Vulnerability from cvelistv5 – Published: 2026-06-19 13:11 – Updated: 2026-06-22 17:15
    VLAI
    Title
    Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication
    Summary
    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.
    Severity
    8.8 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    • CWE-862 - Missing Authorization
    Assigner
    References
    Impacted products
    Vendor Product Version
    dtwang line-desktop-mcp Affected: < 1.1.2
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    "dateReserved": "2026-05-29T14:35:45.904Z",
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