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CVE-2026-66080

5.9 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.9 · broadcomNVD modified 2026-10-19 20:37

Affected (CPE criteria) 1

  • cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*

References 3