CVE-2026-67413mediumCWE-1333

CVE-2026-67413: medium-severity vulnerability in rabbitmq-server

RabbitMQ: Authenticated RabbitMQ JMS Topic Selector Users Can Consume Broker CPU with an Unbounded LIKE Regular Expression

Published · Updated

Follow this CVE+ Monitor rabbitmq-server+ Monitor rabbitmq-server

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6epss 0.5%
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:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
rabbitmq · rabbitmq-server
Related CVEs — rabbitmq-server

In the same product, most dangerous first.

CVE-2026-57219HIGHRabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurationsEPSS 2.8%CVE-2021-32718LOWImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in RabbitMQ management UIEPSS 1.4%CVE-2021-32719LOWImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in RabbitMQ federation management pluginEPSS 1.4%CVE-2023-46118MEDIUMDenial of Service by publishing large messages over the HTTP APIEPSS 1.3%CVE-2026-67414MEDIUMRabbitMQ AMQP 1.0 parser: amplification memory-exhaustion DoS via zero-width array aggregationEPSS 0.6%CVE-2026-57211MEDIUMRabbitMQ: UNC SSRF affecting the management UI on WindowsEPSS 0.6%