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    CVE-2026-88899

    knowns versions before 0.31.0 fail to properly validate the x-opencode-directory request header in the /api/opencode proxy endpoint. Remote attackers can supply arbitrary directory paths to execute file operations outside the project root on the host system.

    Published:Sep 10, 2026
    Last Modified:Sep 11, 2026
    EPS:Sep 10, 2026
    EPSS Score:0.00438
    CVSS Score:9.8

    Affected Products

    Vendor
    Knowns-dev
    Product
    Knowns

    Exploits

    https://github.com/uziii2208/CVE-2026-88899

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    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