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    CVE-2026-26030

    Semantic Kernel, Microsoft's semantic kernel Python SDK, has a remote code execution vulnerability in versions prior to 1.39.4, specifically within the `InMemoryVectorStore` filter functionality. The problem has been fixed in version `python-1.39.4`. Users should upgrade this version or higher. As a workaround, avoid using `InMemoryVectorStore` for production scenarios.

    Published:Feb 19, 2026
    Last Modified:Apr 17, 2026
    EPS:Feb 19, 2026
    EPSS Score:0.00089
    CVSS Score:10

    Affected Products

    Vendor
    Microsoft
    Product
    Semantic-kernel
    Vendor
    Microsoft
    Product
    Semantic Kernel

    Exploits

    https://github.com/InertFluid/sk-cve-2026-26030-labhttps://github.com/mbanyamer/CVE-2026-26030-Microsoft-Semantic-Kernel-1.39.4-RCE

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High