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    CVE-2026-95844

    Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, Moquette does not limit the depth of topic names and topic filters before processing them through recursive CTrie insertion and matching operations. A remote client can publish or subscribe with a deeply nested topic, causing a StackOverflowError that disrupts session processing and can deny service to broker clients. This issue is fixed in version 0.18.1.

    Published:Sep 23, 2026
    Last Modified:Sep 29, 2026
    EPS:Sep 23, 2026
    EPSS Score:0.00291
    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-674 Uncontrolled Recursion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads

    Related CVEs

    CVE-2026-95848 (CVSS 9.3) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when a configured authenticator or authorizator c…
    CVE-2026-95847 (CVSS 8.8) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, H2PersistentQueue derives a session's message-map…
    CVE-2026-95846 (CVSS 8.7) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-…
    CVE-2026-95845 (CVSS 8.7) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, the broker does not enforce a maximum length for …
    CVE-2026-95843 (CVSS 8.7) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription…
    CVE-2026-95842 (CVSS 8.7) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, SessionEventLoop.run catches only InterruptedExce…
    CVE-2026-85724 (CVSS 9.6) — Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when pattern-based ACL rules are configured, Auth…

    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