CVE-2021-34434

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    CVE-2021-34434

    Published: 30 Aug 2021Last Modified: 27 Aug 2026

    Summary:

    Details: In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K4WWGVF5BUFPYPCFUPPP4KRIYI5OTJN2/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RLUUM52Y6AEICPXPSRRXC6OBY4H5XKW7/, https://www.debian.org/security/2023/dsa-5511, https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- c00671af5c25593bebf065ed8820f7f00ee85efe
    Fixed -None

    Affected versions

    v2.0.11
    v2.0.10
    v2.0.9
    v2.0.8
    v2.0.7
    v2.0.6
    v2.0.5
    v2.0.4
    v2.0.3
    v2.0.2
    v2.0.1
    v2.0.0

    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-2021-34434 | CVE-DB