CVE-2024-24776

    Dashboard / Vulnerabilities / CVE-2024-24776

    CVE-2024-24776

    Published: 9 Feb 2024Last Modified: 28 Oct 2026

    Summary: Incorrect Authorization leads to Channel Member Count Leak

    Details: Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.

    References: https://mattermost.com/security-updates, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/24xxx/CVE-2024-24776.json, https://nvd.nist.gov/vuln/detail/CVE-2024-24776

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    v8.1.7-rc3
    v8.1.7
    v8.1.7-rc2
    v8.1.7-rc1
    v8.1.6-rc1
    v8.1.6
    v8.1.5-rc2
    v8.1.5
    v8.1.5-rc1
    v8.1.4-rc2
    v8.1.4
    v8.1.4-rc1
    v8.1.3-rc2
    v8.1.3
    v8.1.3-rc1
    v8.1.2-rc2
    v8.1.2
    v8.1.2-rc1
    v8.1.1-rc2
    v8.1.1
    v8.1.1-rc1
    v8.1.0-rc2
    v8.1.0

    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