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Vulnerability Details :

CVE-2026-57216

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-10 Jul, 2026 | 20:20
Updated At-13 Jul, 2026 | 14:01
Rejected At-
Credits

RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is accepted through a trusted PROXY-protocol path and the backend listener is loopback-bound because the loopback check uses the listener-side socket address instead of the real client source. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:10 Jul, 2026 | 20:20
Updated At:13 Jul, 2026 | 14:01
Rejected At:
▼CVE Numbering Authority (CNA)
RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is accepted through a trusted PROXY-protocol path and the backend listener is loopback-bound because the loopback check uses the listener-side socket address instead of the real client source. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

Affected Products
Vendor
rabbitmq
Product
rabbitmq-server
Versions
Affected
  • >= 4.2.0, < 4.2.6
  • >= 4.1.0, < 4.1.11
  • >= 4.0.0, < 4.0.21
  • >= 3.13.0, < 3.13.15
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287: Improper Authentication
Type: CWE
CWE ID: CWE-287
Description: CWE-287: Improper Authentication
Metrics
VersionBase scoreBase severityVector
3.16.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw
x_refsource_CONFIRM
https://github.com/rabbitmq/rabbitmq-server/pull/15936
x_refsource_MISC
https://github.com/rabbitmq/rabbitmq-server/pull/15940
x_refsource_MISC
https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47
x_refsource_MISC
https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112
x_refsource_MISC
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
x_refsource_MISC
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/pull/15936
Resource:
x_refsource_MISC
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/pull/15940
Resource:
x_refsource_MISC
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47
Resource:
x_refsource_MISC
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112
Resource:
x_refsource_MISC
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw
exploit
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:10 Jul, 2026 | 21:16
Updated At:13 Jul, 2026 | 21:09

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is accepted through a trusted PROXY-protocol path and the backend listener is loopback-bound because the loopback check uses the listener-side socket address instead of the real client source. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Primary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
N/A
Type: Secondary
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Type: Primary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Broadcom Inc.
broadcom
>>rabbitmq_server>>Versions from 3.13.0(inclusive) to 4.2.6(exclusive)
cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-287Secondarysecurity-advisories@github.com
CWE ID: CWE-287
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47security-advisories@github.com
Patch
https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112security-advisories@github.com
Patch
https://github.com/rabbitmq/rabbitmq-server/pull/15936security-advisories@github.com
Issue Tracking
Patch
https://github.com/rabbitmq/rabbitmq-server/pull/15940security-advisories@github.com
Issue Tracking
Patch
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6security-advisories@github.com
Release Notes
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcwsecurity-advisories@github.com
Exploit
Vendor Advisory
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Vendor Advisory
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/pull/15936
Source: security-advisories@github.com
Resource:
Issue Tracking
Patch
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/pull/15940
Source: security-advisories@github.com
Resource:
Issue Tracking
Patch
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Hyperlink: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Exploit
Vendor Advisory

Change History

0
Information is not available yet

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