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Vulnerabilities

Vulnerability · CVE-2026-67414

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-2026-67414. 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
Medium6.0
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, deps/amqp10_common/src/amqp10_binary_parser.erl materializes each element of AMQP 1.0 arrays whose shared constructor has zero width, while limiting only the number of elements in each array and not the aggregate arrays in a frame. After completing SASL authentication, a low-privilege client can send an ordinary frame containing many individually permitted arrays, causing a small frame to expand into a very large reader-process heap before later frame validation or authorization. Because deps/rabbit/src/rabbit_amqp_reader.erl clears the pre-authentication max_heap_size guard after login, repeated or concurrent frames can trigger the node-wide memory alarm, block publishers, or exhaust broker memory. 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-2026-67414

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-2026-67414. 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-400: Uncontrolled Resource Consumption; CWE-770: Allocation of Resources Without Limits or Throttling. 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, deps/amqp10_common/src/amqp10_binary_parser.erl materializes each element of AMQP 1.0 arrays whose shared constructor has zero width, while limiting only the number of elements in each array and not the aggregate arrays in a frame. After completing SASL authentication, a low-privilege client can send

  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, deps/amqp10_common/src/amqp10_binary_parser.erl materializes each element of AMQP 1.0 arrays whose shared constructor has zero width, while limiting only the number of elements in each array and not the aggregate arrays in a frame. After completing SASL authentication, a low-privilege client can send

Sources

  • CVE.orgVulnerability recordCVE-2026-67414

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-67414

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-67414

    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, deps/amqp10_common/src/amqp10_binary_parser.erl materializes each element of AMQP 1.0 arrays whose shared constructor has zero width, while limiting only the number of elements in ea

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-67414
    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.