CVE-2021-29440

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    CVE-2021-29440

    Published: 13 Apr 2021Last Modified: 10 Mar 2026

    Summary:

    Details: Grav is a file based Web-platform. Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance. The issue was addressed in version 1.7.11.

    References: , https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc, https://packagist.org/packages/getgrav/grav, http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.html, https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilities

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-29440 | CVE-DB