RabbitMQ up to 4.0.22/4.1.13/4.2.8/4.3.2 Jms Topic Exchange re:run rjms_erlang_selector recursion

Summaryinfo

A vulnerability classified as problematic has been found in RabbitMQ up to 4.0.22/4.1.13/4.2.8/4.3.2. Affected by this issue is the function re:run of the component Jms Topic Exchange. Performing a manipulation of the argument rjms_erlang_selector results in recursion. This vulnerability is reported as CVE-2026-67413. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in RabbitMQ up to 4.0.22/4.1.13/4.2.8/4.3.2. This affects the function re:run of the component Jms Topic Exchange. The manipulation of the argument rjms_erlang_selector with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-67413 since 07/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 4.0.23, 4.1.14, 4.2.9 or 4.3.3 eliminates this vulnerability.

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Productinfo

Name

• RabbitMQ

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.0.19
• 4.0.20
• 4.0.21
• 4.0.22
• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.1.8
• 4.1.9
• 4.1.10
• 4.1.11
• 4.1.12
• 4.1.13
• 4.2.0
• 4.2.1
• 4.2.2
• 4.2.3
• 4.2.4
• 4.2.5
• 4.2.6
• 4.2.7
• 4.2.8
• 4.3.0
• 4.3.1
• 4.3.2

CPE 2.3info

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CPE 2.2info

• 🔒
• 🔒
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