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CVE-2026-67416

CVE-2026-67416 · RabbitMQ: AMQP 1.0 symbolic body descriptor prefix collisions bypass validation

This page contains facts from public vulnerability sources. Check the original advisory before updating.

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.24, 4.1.15, 4.2.10, and 4.3.4, the optimized AMQP 1.0 server_mode parser in deps/amqp10_common/src/amqp10_binary_parser.erl matches the textual prefixes of symbolic data, sequence, and value body descriptors without verifying their encoded symbol lengths. An authenticated AMQP 1.0 publisher with write permission can submit a well-formed unknown descriptor that begins with a registered body descriptor, and RabbitMQ misclassifies and stores the bytes as a standard body section. Strict AMQP 1.0 consumers can terminate while decoding the stored entry. For bodies misclassified as data, AMQP 0-9-1 or other cross-protocol conversion performs full body decoding and can terminate the consumer protocol process, with acknowledgement-required delivery permitting repeated failures. Sequence and value classifications are normally transported as opaque encoded payloads on that conversion path. The broker remains alive, and the issue does not bypass routing or authorization. This issue is fixed in versions 4.0.24, 4.1.15, 4.2.10, and 4.3.4.

CVSS 5.3 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: system · database

Affected products and versions

  • rabbitmq

    Versions
    • >= 4.0.0, < 4.0.24: Affected
    • >= 4.1.0, < 4.1.15: Affected
    • >= 4.2.0, < 4.2.10: Affected
    • >= 4.3.0, < 4.3.4: Affected

    No fix published

  • rabbitmq-server Debian:12

    Versions
    • 3.10.8-1.1
    • 3.10.8-1.1+deb12u1
    • 3.10.8-2
    • 3.10.8-3
    • 3.10.8-4
    • 3.12.1-1
    • 3.12.1-1.1
    • 4.0.5-1
    • 4.0.5-10
    • 4.0.5-11
    • 4.0.5-12
    • 4.0.5-13
    • 4.0.5-14
    • 4.0.5-2
    • 4.0.5-3
    • 4.0.5-4
    • 4.0.5-5
    • 4.0.5-6
    • 4.0.5-8
    • 4.0.5-9
    • 4.3.0-1
    • 4.3.0-2
    • 4.3.0-3
    • 4.3.2-1
    • 4.3.2-2
    • 4.3.2-3
    • 4.3.2-4
    • 4.3.2-5
    • 4.3.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Debian:13

    Versions
    • 4.0.5-10
    • 4.0.5-11
    • 4.0.5-12
    • 4.0.5-13
    • 4.0.5-14
    • 4.0.5-6
    • 4.0.5-6+deb13u1
    • 4.0.5-6+deb13u2
    • 4.0.5-8
    • 4.0.5-9
    • 4.3.0-1
    • 4.3.0-2
    • 4.3.0-3
    • 4.3.2-1
    • 4.3.2-2
    • 4.3.2-3
    • 4.3.2-4
    • 4.3.2-5
    • 4.3.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Debian:14

    Versions
    • 4.0.5-10
    • 4.0.5-11
    • 4.0.5-12
    • 4.0.5-13
    • 4.0.5-14
    • 4.0.5-6
    • 4.0.5-8
    • 4.0.5-9
    • 4.3.0-1
    • 4.3.0-2
    • 4.3.0-3
    • 4.3.2-1
    • 4.3.2-2
    • 4.3.2-3
    • 4.3.2-4
    • 4.3.2-5
    Affected ranges
    • ECOSYSTEM: < 4.3.6-1

    Update to 4.3.6-1

  • rabbitmq-server Ubuntu:Pro:16.04:LTS

    Versions
    • 3.5.4-1
    • 3.5.4-3
    • 3.5.4-3.1
    • 3.5.7-1
    • 3.5.7-1ubuntu0.16.04.1
    • 3.5.7-1ubuntu0.16.04.2
    • 3.5.7-1ubuntu0.16.04.4
    • 3.5.7-1ubuntu0.16.04.4+esm1
    • 3.5.7-1ubuntu0.16.04.4+esm2
    • 3.5.7-1ubuntu0.16.04.4+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Ubuntu:Pro:18.04:LTS

    Versions
    • 3.6.10-1
    • 3.6.10-1ubuntu0.1
    • 3.6.10-1ubuntu0.3
    • 3.6.10-1ubuntu0.4
    • 3.6.10-1ubuntu0.5
    • 3.6.10-1ubuntu0.5+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Ubuntu:Pro:20.04:LTS

    Versions
    • 3.7.8-4ubuntu2
    • 3.7.18-1
    • 3.8.2-0ubuntu1
    • 3.8.2-0ubuntu1.1
    • 3.8.2-0ubuntu1.2
    • 3.8.2-0ubuntu1.3
    • 3.8.2-0ubuntu1.4
    • 3.8.2-0ubuntu1.5
    • 3.8.3-0ubuntu0.1
    • 3.8.3-0ubuntu0.2
    • 3.8.3-0ubuntu0.3
    • 3.8.3-0ubuntu0.3+esm1
    • 3.8.3-0ubuntu0.3+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Ubuntu:22.04:LTS

    Versions
    • 3.8.9-3ubuntu1
    • 3.9.8-1
    • 3.9.8-2
    • 3.9.8-3
    • 3.9.8-5
    • 3.9.8-6
    • 3.9.13-1
    • 3.9.13-1ubuntu0.22.04.1
    • 3.9.13-1ubuntu0.22.04.2
    • 3.9.27-0ubuntu0.1
    • 3.9.27-0ubuntu0.2
    • 3.9.27-0ubuntu0.5
    • 3.9.27-0ubuntu0.6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Ubuntu:24.04:LTS

    Versions
    • 3.12.1-1
    • 3.12.1-1ubuntu1
    • 3.12.1-1ubuntu1.2
    • 3.12.1-1ubuntu1.4
    • 3.12.1-1ubuntu1.6
    • 3.12.1-1ubuntu1.7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Ubuntu:26.10

    Versions
    • 4.0.5-10ubuntu5
    • 4.3.2-4ubuntu2
    • 4.3.2-4ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Ubuntu:26.04:LTS

    Versions
    • 4.0.5-8ubuntu2
    • 4.0.5-10ubuntu1
    • 4.0.5-10ubuntu2
    • 4.0.5-10ubuntu3
    • 4.0.5-10ubuntu4
    • 4.0.5-10ubuntu5
    • 4.0.5-10ubuntu5.1
    • 4.0.5-10ubuntu5.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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