RabbitMQ Web Management Plugin DoS via heap overflow

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• broadcom rabbitmq server3.8.0 and later · before 3.8.1
• debian debian linux9.0
• fedoraproject fedora30
• fedoraproject fedora31
• pivotal software rabbitmq1.17.0 and later · before 1.17.4
• pivotal software rabbitmq3.7.0 and later · before 3.7.21
• pivotal software rabbitmq1.16.0 and later · before 1.16.7
• redhat openstack15

Versions reported by the vendor

Affected version ranges reported by the assigning authority (pivotal). Independent of NVD's CPE analysis and usually ahead of it.

• Pivotal RabbitMQ

  • 3.7 and later · before v3.7.21affected
  • 3.8 and later · before v3.8.1affected

• Pivotal RabbitMQ for Pivotal Platform

  • 1.16 and later · before 1.16.7affected
  • 1.17 and later · before 1.17.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-57216RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks
  40Plan
• CVE-2026-57211RabbitMQ: UNC SSRF affecting the management UI on Windows
  40Plan
• CVE-2016-9877An issue was discovered in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6 and RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1
  39Monitor
• CVE-2026-57219RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurations
  35Monitor
• CVE-2021-22117RabbitMQ installers on Windows prior to version 3.8.16 do not harden plugin directory permissions, potentially allowing attackers with suffi
  31Monitor
• CVE-2017-4966An issue was discovered in these Pivotal RabbitMQ versions: all 3.4.x versions, all 3.5.x versions, and 3.6.x versions prior to 3.6.9; and t
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.