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    2 vulnerabilities found for mcp-framework by QuantGeekDev

    CVE-2026-39313 (GCVE-0-2026-39313)

    Vulnerability from nvd – Published: 2026-04-16 21:24 – Updated: 2026-04-17 18:46
    VLAI
    Title
    MCP-Framework: Unbounded memory allocation in readRequestBody allows denial of service via HTTP transport
    Summary
    mcp-framework is a framework for building Model Context Protocol (MCP) servers. In versions 0.2.21 and below, the readRequestBody() function in the HTTP transport concatenates request body chunks into a string with no size limit. Although a maxMessageSize configuration value exists, it is never enforced in readRequestBody(). A remote unauthenticated attacker can crash any mcp-framework HTTP server by sending a single large POST request to /mcp, causing memory exhaustion and denial of service. This issue has been fixed in version 0.2.22.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    QuantGeekDev mcp-framework Affected: < 0.2.22
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-39313 (GCVE-0-2026-39313)

    Vulnerability from cvelistv5 – Published: 2026-04-16 21:24 – Updated: 2026-04-17 18:46
    VLAI
    Title
    MCP-Framework: Unbounded memory allocation in readRequestBody allows denial of service via HTTP transport
    Summary
    mcp-framework is a framework for building Model Context Protocol (MCP) servers. In versions 0.2.21 and below, the readRequestBody() function in the HTTP transport concatenates request body chunks into a string with no size limit. Although a maxMessageSize configuration value exists, it is never enforced in readRequestBody(). A remote unauthenticated attacker can crash any mcp-framework HTTP server by sending a single large POST request to /mcp, causing memory exhaustion and denial of service. This issue has been fixed in version 0.2.22.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    QuantGeekDev mcp-framework Affected: < 0.2.22
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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