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    CVE-2026-95846

    Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-Will message without applying the canWrite authorization and reserved-topic checks used for a normal PUBLISH. A client can configure a Will for a topic that the client is not permitted to write and cause the broker to publish the unauthorized message when the client disconnects unexpectedly. This issue allows unauthorized message injection into restricted topics. This issue is fixed in version 0.18.1.

    Published:Sep 23, 2026
    Last Modified:Sep 25, 2026
    EPS:Sep 23, 2026
    EPSS Score:0.00288
    CVSS Score:7.5

    Affected Products

    Vendor
    Moquette
    Product
    Moquette
    Vendor
    Moquette-io
    Product
    Moquette

    Exploits

    https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhqhttps://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-95844 (CVSS 8.7) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, Moquette does not limit the depth of topic names …
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    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