CVE-2023-48732

    Dashboard / Vulnerabilities / CVE-2023-48732

    CVE-2023-48732

    Published: 2 Jan 2024Last Modified: 24 Oct 2026

    Summary: Keywords that trigger mentions are leaked to other users

    Details: Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.

    References: https://mattermost.com/security-updates, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/48xxx/CVE-2023-48732.json, https://nvd.nist.gov/vuln/detail/CVE-2023-48732

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -77aeda5cedc8ef60d06da024202b8c7999efd671

    Affected versions

    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