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CVE-2026-66080

RabbitMQ: Super-stream partitions unbounded allocation PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
rabbitmq / rabbitmq-serveraffected >= 4.1.0, < 4.1.11; affected >= 4.2.0, < 4.2.6

CWE

CWE-770

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.