CVE-2023-5333

    Dashboard / Vulnerabilities / CVE-2023-5333

    CVE-2023-5333

    Published: 9 Oct 2023Last Modified: 25 Sept 2026

    Summary: Denial of Service via multiple identical User IDs in /api/v4/users/ids

    Details: Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.

    References: https://mattermost.com/security-updates, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5333.json, https://nvd.nist.gov/vuln/detail/CVE-2023-5333

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -58a74d76295680a5bb684f795e21970ab53fee1d

    Affected versions

    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
    CVE-2023-5333 | CVE-DB