CVE-2021-21312

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    CVE-2021-21312

    Published: 3 Mar 2021Last Modified: 7 Aug 2026

    Summary:

    Details: GLPI is open source software which stands for Gestionnaire Libre de Parc Informatique and it is a Free Asset and IT Management Software package. In GLPI before verison 9.5.4, there is a vulnerability within the document upload function (Home > Management > Documents > Add, or /front/document.form.php endpoint), indeed one of the form field: "Web Link" is not properly sanitized and a malicious user (who has document upload rights) can use it to deliver JavaScript payload. For example if you use the following payload: " accesskey="x" onclick="alert(1)" x=", the content will be saved within the database without any control. And then once you return to the summary documents page, by clicking on the "Web Link" of the newly created file it will create a new empty tab, but on the initial tab the pop-up "1" will appear.

    References: https://github.com/glpi-project/glpi/releases/tag/9.5.4, https://github.com/glpi-project/glpi/security/advisories/GHSA-c7f6-3mr7-3rq2

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -59a0a0b6101fcd54b00bfc6a61d4e707513c08c9

    Affected versions

    9.5.3
    9.5.2
    9.5.1
    9.5.0
    9.5.0-rc2
    9.5.0-rc1

    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-2021-21312 | CVE-DB