CVE-2026-57211Public exploitNetwork attack vector

Unauthenticated SSRF via pre-validation UNC path resolution

Published Jul 10, 2026 · Updated Jul 10, 2026

SSRF in RabbitMQ Server 4.1.0 through 4.1.10 and 4.2.0 through 4.2.5 on Windows allows remote attackers to initiate DNS and SMB requests. The rabbit_mgmt_wm_static handler decodes URL-encoded backslashes, joins them into a UNC path, and calls erl_prim_loader:read_file_info before validating the path. The unauthenticated path is reachable only when the management plugin plus at least one management extension plugin is enabled; domain-joined hosts can disclose an NTLMv2 credential for relay.

CVSS severity6.5
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in RabbitMQ Server 4.1.0 through 4.1.10 and 4.2.0 through 4.2.5 on Windows allows remote attackers to initiate DNS and SMB requests. The rabbit_mgmt_wm_static handler decodes URL-encoded backslashes, joins them into a UNC path, and calls erl_prim_loader:read_file_info before validating the path. The unauthenticated path is reachable only when the management plugin plus at least one management extension plugin is enabled; domain-joined hosts can disclose an NTLMv2 credential for relay.

The record

CVE
CVE-2026-57211
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
RabbitMQ
Product
RabbitMQ Server
Classifications
CWE-918, CWE-36, T1187
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.1.0, < 4.1.11
  2. Affected versionversion=>= 4.2.0, < 4.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RabbitMQ · RabbitMQ Serverversion=>= 4.1.0, < 4.1.11; version=>= 4.2.0, < 4.2.6

Published CVSS scores

10.0NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
6.5GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CWE-36Absolute Path Traversal
T1187Forced Authentication

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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