RabbitMQ: Authenticated RabbitMQ JMS Topic Selector Users Can Consume Broker CPU with an Unbounded LIKE Regular Expression
Published Sep 25, 2026
6.0
MEDIUMCVSS 4.0
EPSS 0.30%
Description
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.
Affected products
-
- Version >= 4.0.0, < 4.0.23StatusaffectedConstraints-
- Version >= 4.1.0, < 4.1.14StatusaffectedConstraints-
- Version >= 4.2.0, < 4.2.9StatusaffectedConstraints-
- Version >= 4.3.0, < 4.3.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rabbitmq | Rabbitmq-Server | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (7)
- https://github.com/rabbitmq/rabbitmq-server/commit/20203c50ea6ff459d462b2d4355326d3a870682c x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/commit/60de2fbbcd812ab294985cef260cc2f1b1a02a5b x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/commit/9e36b7f4c1e2eed77300288dca3e01bd9b23c432 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/commit/f4d9da668b7304dfb9aeb2b4e9ff766a1275d021 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-chxf-3hfg-j8f7 exploitx_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://github.com/rabbitmq/rabbitmq-server/commit/20203c50ea6ff459d462b2d4355326d3a870682c | x_refsource_MISC | |
| https://github.com/rabbitmq/rabbitmq-server/commit/60de2fbbcd812ab294985cef260cc2f1b1a02a5b | x_refsource_MISC | |
| https://github.com/rabbitmq/rabbitmq-server/commit/9e36b7f4c1e2eed77300288dca3e01bd9b23c432 | x_refsource_MISC | |
| https://github.com/rabbitmq/rabbitmq-server/commit/f4d9da668b7304dfb9aeb2b4e9ff766a1275d021 | x_refsource_MISC | |
| https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9 | x_refsource_MISC | |
| https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3 | x_refsource_MISC | |
| https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-chxf-3hfg-j8f7 | exploitx_refsource_CONFIRM |
Change history (0)
No recorded changes yet.