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    CVE-2025-46559

    Misskey is an open source, federated social media platform. Starting in version 12.31.0 and prior to version 2025.4.1, missing validation in `Mk:api` allows malicious AiScript code to access additional endpoints that it isn't designed to have access to. The missing validation allows malicious AiScript code to prefix a URL with `../` to step out of the `/api` directory, thereby being able to make requests to other endpoints, such as `/files`, `/url`, and `/proxy`. Version 2025.4.1 fixes the issue.

    Published:May 5, 2025
    Last Modified:Sep 3, 2025
    EPS:May 5, 2025
    EPSS Score:0.00044
    CVSS Score:5.4

    Affected Products

    Vendor
    Misskey
    Product
    Misskey

    Exploits

    https://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2

    Related CVEs

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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