Inefficient Regular Expression Complexity Affecting rabbitmq-server package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.42% (35th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RABBITMQSERVER-20153830
  • published26 Sept 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-67413  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest rabbitmq-server.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rabbitmq-server package and not the rabbitmq-server package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.23, 4.1.14, 4.2.9, and 4.3.3, the optional rabbitmq_jms_topic_exchange plugin's x-jms-topic exchange accepted a client-controlled rjms_erlang_selector binding expression whose LIKE evaluator expanded percent and underscore wildcards into overlapping PCRE fragments. It executed those fragments with raw re:run/3 without match or recursion limits, allowing an authenticated tenant that can bind and publish to consume broker scheduler CPU and deny service with pathological selectors. This issue is fixed in versions 4.0.23, 4.1.14, 4.2.9, and 4.3.3.

CVSS Base Scores

version 3.1