Bug 2541516 (CVE-2026-67408) - CVE-2026-67408 rabbitmq-server: rabbitmq-server: Denial of Service via excessive memory allocation in stream management
Summary: CVE-2026-67408 rabbitmq-server: rabbitmq-server: Denial of Service via excess...
Keywords:
Status: NEW
Alias: CVE-2026-67408
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-25 16:51 UTC by OSIDB Bzimport
Modified: 2026-10-02 22:57 UTC (History)
7 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-25 16:51:26 UTC
RabbitMQ is a messaging and streaming broker. From 4.1.0 until 4.3.3, 4.2.9, and 4.1.11, Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service. rabbitMQ 4.3.1 with rabbitmqstreammanagement enabled accepts PUT /api/stream/super-streams/{vhost}/{name} requests from an authenticated management user that can access the target vhost. When the request body contains the binding-keys field, the handler parses the attacker-controlled comma-separated string and builds the full stream-name list before checking whether the user has permission to configure the resulting streams. A low-privileged management user with vhost access but no configure, write, or read permission can therefore force large transient allocations before the resource permission check. In a 768 MB memory-limited container, one HTTP PUT with about 4.5 MB of JSON body killed the RabbitMQ container with Docker state exited true An authenticated low-privileged management user can kill a memory-limited RabbitMQ node with one HTTP This issue is fixed in versions 4.3.3, 4.2.9, and 4.1.11.


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