CVE-2021-40108

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    CVE-2021-40108

    Published: 27 Sept 2021Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in Concrete CMS through 8.5.5. The Calendar is vulnerable to CSRF. ccm_token is not verified on the ccm/calendar/dialogs/event/add/save endpoint.

    References: https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes, https://hackerone.com/reports/1102018

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -f9c8e08d3651a250f42e0c0a8cc18bc64b42733f

    Affected versions

    8.4.1

    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-2021-40108 | CVE-DB