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CVE-2026-57211RabbitMQ: UNC SSRF affecting the management UI on Windows
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.
10.0 CRITICALEPSS 0.63%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 10.0 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 6.5 | MEDIUM | 3.1GitHub_M (CNA) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
Details
- CVE ID
- CVE-2026-57211
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Jul 10, 2026
- Last modified
- 2026-10-25 15:10 UTC
Affected Products
As published by the CNA in the CVE record.
rabbitmqrabbitmq-server2 version ranges
- >= 4.2.0, < 4.2.6
- >= 4.1.0, < 4.1.11
References
- github.com https://github.com/rabbitmq/rabbitmq-server/commit/39c3a8e9c71da0403d8dfc13f700e60c936e3682
- github.com https://github.com/rabbitmq/rabbitmq-server/commit/6730797f6a34b4e8308cea60adf1243857e70204
- github.com https://github.com/rabbitmq/rabbitmq-server/pull/15803
- github.com https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
- github.com https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6