Vulnerability Details CVE-2026-57211
RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management plugin static file handler rabbit_mgmt_wm_static can pass URL-encoded backslashes to erl_prim_loader:read_file_info before path validation when multiple management extension plugins are enabled, causing outbound DNS and SMB requests to attacker-controlled UNC paths. This issue is fixed in versions 4.1.11 and 4.2.6.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 19.6%
CVSS Severity
CVSS v3 Score 6.5
References
- https://github.com/rabbitmq/rabbitmq-server/commit/39c3a8e9c71da0403d8dfc13f700e60c936e3682
- https://github.com/rabbitmq/rabbitmq-server/commit/6730797f6a34b4e8308cea60adf1243857e70204
- https://github.com/rabbitmq/rabbitmq-server/pull/15803
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6
Products affected by CVE-2026-57211
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.0
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.1
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.2
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.3
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.4
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.5
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.6
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.7
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cpe:2.3:a:broadcom:rabbitmq_server:4.1.8
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cpe:2.3:a:broadcom:rabbitmq_server:4.2.0
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cpe:2.3:a:broadcom:rabbitmq_server:4.2.1
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cpe:2.3:a:broadcom:rabbitmq_server:4.2.2
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cpe:2.3:a:broadcom:rabbitmq_server:4.2.3
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cpe:2.3:a:broadcom:rabbitmq_server:4.2.4
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cpe:2.3:a:broadcom:rabbitmq_server:4.2.5
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cpe:2.3:o:microsoft:windows:-