CVE-2021-3313

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    CVE-2021-3313

    Published: 20 May 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Plone CMS until version 5.2.4 has a stored Cross-Site Scripting (XSS) vulnerability in the user fullname property and the file upload functionality. The user's input data is not properly encoded when being echoed back to the user. This data can be interpreted as executable code by the browser and allows an attacker to execute JavaScript in the context of the victim's browser if the victim opens a vulnerable page containing an XSS payload.

    References: http://www.openwall.com/lists/oss-security/2021/05/22/1, https://plone.org/download/releases/5.2.3, https://plone.org/security/hotfix/20210518, https://www.compass-security.com/fileadmin/Research/Advisories/2021-07_CSNC-2021-013_XSS_in_Plone_CMS.txt

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -d5b50de9c17faac5051d06141bd12cd3e40af8e8

    Affected versions

    5.2.3
    5.2.2
    5.2.1
    5.2.0

    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-2021-3313 | CVE-DB