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    CVE-2025-66294

    Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection (SSTI) vulnerability exists in Grav that allows authenticated attackers with editor permissions to execute arbitrary commands on the server and, under certain conditions, may also be exploited by unauthenticated attackers. This vulnerability stems from weak regex validation in the cleanDangerousTwig method. This vulnerability is fixed in 1.8.0-beta.27.

    Published:Dec 1, 2025
    Last Modified:Dec 4, 2025
    EPS:Dec 1, 2025
    EPSS Score:0.00061
    CVSS Score:8.8

    Affected Products

    Vendor
    Getgrav
    Product
    Grav

    Exploits

    https://github.com/getgrav/grav/security/advisories/GHSA-662m-56v4-3r8f

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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