CVE-2026-66080
RabbitMQ: Super-stream partitions unbounded allocation
Description
RabbitMQ is a messaging and streaming broker. Prior to versions 4.1.11, 4.2.6, and 4.3.0, validate_partitions only checks that the requested partition count is at least 1, with no upper bound. A large count such as lists:seq(0, 500000000) allocates roughly 8GB. Preconditions include The rabbitmq_stream_management plugin must be enabled. The caller needs the management tag and access to the target vhost.. This issue is fixed in versions 4.1.11, 4.2.6, and 4.3.0.
No summary for this CVE yet.
Weaknesses
Affected Products
rabbitmq
oss-project·GBaka rabbitmq-server
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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MITRE ATT&CK
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References
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