CVE Feed

    Dashboard / CVE / CVE-2023-5333

    CVE-2023-5333

    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.

    Published:Oct 9, 2023
    Last Modified:Nov 21, 2024
    EPS:Oct 9, 2023
    EPSS Score:0.00118
    CVSS Score:4.3

    Affected Products

    Vendor
    Mattermost
    Product
    Mattermost Server

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-9693 (CVSS 3.5) — Mattermost versions 10.11.x <= 10.11.20, 11.7.x <= 11.7.5 Mattermost fails to remove thread membership records…
    CVE-2026-9859 (CVSS 6.5) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fail to enforce PermissionManageBo…
    CVE-2026-9816 (CVSS 8.3) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fail to validate BoardMember.Schem…
    CVE-2026-10080 (CVSS 6.5) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fails to validate WebSocket comman…
    CVE-2026-10527 (CVSS 6.3) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fails to reconcile SchemeAdmin fla…
    CVE-2026-15754 (CVSS 4.2) — Mattermost versions 11.7.x <= 11.7.6, 11.8.x <= 11.8.3 The access control policy unassign endpoint fails to re…
    CVE-2026-16044 (CVSS 5.4) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to prevent guest users from receiving Board Adm…
    CVE-2026-16045 (CVSS 4.3) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 Mattermost failed to restrict OAuth deauthorization …
    CVE-2026-16047 (CVSS 4.3) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fail to validate that users have r…
    CVE-2026-16046 (CVSS 4.3) — Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to enforce run-state validation on write operat…

    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