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Findings

CVE-2026-67416

RabbitMQ is a messaging and streaming broker.

Published Oct 14, 2026 · updated Oct 15, 2026

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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    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-f

  2. Oct 15, 2026 · OSV.dev

    Fix available

    rabbitmq-server fixed in 4.3.6-1

  3. Oct 15, 2026 · OSV.dev

    Fix available

    rabbitmq-server fixed in 4.3.6-1

  4. Oct 15, 2026 · OSV.dev

    Updated

    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-f

  5. Oct 15, 2026 · NIST NVD

    Updated

    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-f

Affected

  • Debian:12 rabbitmq-server3.10.8-1.1, 3.10.8-1.1+deb12u1, 3.10.8-2
  • Debian:13 rabbitmq-server4.0.5-10, 4.0.5-11, 4.0.5-12
  • Debian:14 rabbitmq-server0 → 4.3.6-1

Sources

  • CVE.orgVulnerability recordCVE-2026-67416

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-67416

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-67416

    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 witho

    nvd.nist.gov
  • OSV.devPackage advisoryDEBIAN-CVE-2026-67416
    osv.dev

References