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    4 vulnerabilities found for typescript-sdk by modelcontextprotocol

    CVE-2026-25536 (GCVE-0-2026-25536)

    Vulnerability from nvd – Published: 2026-02-04 21:29 – Updated: 2026-07-15 01:16
    VLAI
    Title
    @modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
    Summary
    MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0.
    Severity
    7.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
    Assigner
    References
    Impacted products
    Vendor Product Version
    modelcontextprotocol typescript-sdk Affected: >= 1.10.0, < 1.26.0
    		Create a notification for this product.
    Red Hat Red Hat Ansible Automation Platform 2.6 Unaffected: 1772196222 , < * (rpm)
        cpe:/a:redhat:ansible_automation_platform:2.6::el9
    		 Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-66414 (GCVE-0-2025-66414)

    Vulnerability from nvd – Published: 2025-12-02 18:12 – Updated: 2025-12-02 18:46
    VLAI
    Title
    DNS Rebinding Protection Disabled by Default in Model Context Protocol TypeScript SDK for Servers Running on Localhost
    Summary
    MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. Prior to 1.24.0, The Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled enableDnsRebindingProtection, a malicious website could exploit DNS rebinding to bypass same-origin policy restrictions and send requests to the local MCP server. This could allow an attacker to invoke tools or access resources exposed by the MCP server on behalf of the user in those limited circumstances. Note that running HTTP-based MCP servers locally without authentication is not recommended per MCP security best practices. This issue does not affect servers using stdio transport. This vulnerability is fixed in 1.24.0.
    Severity
    7.6 (High)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1188 - Insecure Default Initialization of Resource
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-25536 (GCVE-0-2026-25536)

    Vulnerability from cvelistv5 – Published: 2026-02-04 21:29 – Updated: 2026-07-15 01:16
    VLAI
    Title
    @modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
    Summary
    MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0.
    Severity
    7.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
    Assigner
    References
    Impacted products
    Vendor Product Version
    modelcontextprotocol typescript-sdk Affected: >= 1.10.0, < 1.26.0
    		Create a notification for this product.
    Red Hat Red Hat Ansible Automation Platform 2.6 Unaffected: 1772196222 , < * (rpm)
        cpe:/a:redhat:ansible_automation_platform:2.6::el9
    		 Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-66414 (GCVE-0-2025-66414)

    Vulnerability from cvelistv5 – Published: 2025-12-02 18:12 – Updated: 2025-12-02 18:46
    VLAI
    Title
    DNS Rebinding Protection Disabled by Default in Model Context Protocol TypeScript SDK for Servers Running on Localhost
    Summary
    MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. Prior to 1.24.0, The Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled enableDnsRebindingProtection, a malicious website could exploit DNS rebinding to bypass same-origin policy restrictions and send requests to the local MCP server. This could allow an attacker to invoke tools or access resources exposed by the MCP server on behalf of the user in those limited circumstances. Note that running HTTP-based MCP servers locally without authentication is not recommended per MCP security best practices. This issue does not affect servers using stdio transport. This vulnerability is fixed in 1.24.0.
    Severity
    7.6 (High)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1188 - Insecure Default Initialization of Resource
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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