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    CVE-2026-57220

    RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.

    Published:Jul 10, 2026
    Last Modified:Jul 26, 2026
    EPS:Jul 10, 2026
    EPSS Score:0.00547
    CVSS Score:7.5

    Affected Products

    Vendor
    Rabbitmq
    Product
    Rabbitmq-server

    Exploits

    https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35qhttps://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q

    Related CVEs

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    CVE-2026-57211 (CVSS 6.5) — RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management pl…
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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