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    CVE-2026-42844

    Grav is a file-based Web platform. In Grav 2.0.0-beta.2, a low-privileged authenticated API user with api.media.write can abuse /api/v1/blueprint-upload to write an arbitrary YAML file into user/accounts/, then log in as the newly created account with api.super privileges. This results in full administrative compromise of the Grav API. This vulnerability is fixed in API 1.0.0-beta.17.

    Published:May 12, 2026
    Last Modified:May 19, 2026
    EPS:May 12, 2026
    EPSS Score:0.00043
    CVSS Score:8.8

    Affected Products

    Vendor
    Getgrav
    Product
    Grav

    Exploits

    https://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756hhttps://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756h

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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