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Vulnerabilities

Vulnerability · CVE-2026-67416

RabbitMQ is a messaging and streaming broker.

Published Oct 14, 2026 · catalog updated Oct 15, 2026 · RabbitMQ is a messaging

Check if you run it

No confirmed exploitation is on record for CVE-2026-67416. EPSS is 0.54%. Act only if a listed version of RabbitMQ is a messaging is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (RabbitMQ is a messaging).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.54%
Remediation
Advisory link
Affected products
Debian:12 rabbitmq-server · Debian:13 rabbitmq-server · Debian:14 rabbitmq-server

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • 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

How to fix CVE-2026-67416

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-67416. EPSS is 0.54%. Act only if a listed version of RabbitMQ is a messaging is installed.

Which versions are affected?

Compare what you have installed with 3.10.8-1.1, 3.10.8-1.1+deb12u1, 3.10.8-2, 4.0.5-10, 4.0.5-11, 4.0.5-12, 0 → 4.3.6-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation; CWE-248; CWE-754. EPSS 0.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

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 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 4.3.6-1

  3. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rabbitmq-server fixed in 4.3.6-1

  4. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    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

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
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-67416
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.