RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth Error Handling

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-67421
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 17:17:14 UTC
Updated2026-09-25 20:17:39 UTC
DescriptionRabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, RabbitMQ Management rendered an AMQP authorization-error reason containing an attacker-controlled queue name as HTML when the OAuth management UI was enabled. Exploitation requires an attacker with queue configure permission, a management administrator who can see but cannot read that queue, and the administrator clicking Get Message(s). A queue name containing a base element can then retarget the automatic relative refresh because the Content Security Policy omits base-uri and connect-src, and an attacker endpoint that permits the management origin through CORS can receive the victim's Authorization header. This issue is fixed in versions 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5.

Risk And Classification

Primary CVSS: v4.0 4.5 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary4.5MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/C...
4.0CNADECLARED4.5MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
Active
Confidentiality
Low
Integrity
Low
Availability
None
Sub Conf.
High
Sub Integrity
Low
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rabbitmq Rabbitmq-server affected >= 3.13.0, < 3.13.19 Not specified
CNA Rabbitmq Rabbitmq-server affected >= 4.0.0, < 4.0.24 Not specified
CNA Rabbitmq Rabbitmq-server affected >= 4.1.0, < 4.1.15 Not specified
CNA Rabbitmq Rabbitmq-server affected >= 4.2.0, < 4.2.10 Not specified
CNA Rabbitmq Rabbitmq-server affected >= 4.3.0, < 4.3.5 Not specified

References

ReferenceSourceLinkTags
github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-6256-27fm-4rgr 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/rabbitmq/rabbitmq-server/commit/ff595eaaa6d4f580f72fa04801ffd... [email protected] github.com
github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.5 [email protected] github.com
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