CVE-2021-21809

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    CVE-2021-21809

    Published: 23 Jun 2021Last Modified: 9 Jul 2026

    Summary:

    Details: A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.

    References: http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html, https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- ec58cefefb2722f61f77c9a2b6a12d40a8c078a0
    Fixed -None

    Affected versions

    3.10.0-NA

    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-2021-21809 | CVE-DB