RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's declared length before buffering the frame. With the stream plugin enabled, a remote client could therefore cause excessive memory pressure and denial of service by declaring an oversized frame. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
rabbitmq rabbitmq-server affected
Version Status Constraints
>= 3.13.0, < 3.13.15 affected —
>= 4.0.0, < 4.0.20 affected —
>= 4.1.0, < 4.1.11 affected —
>= 4.2.0, < 4.2.6 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Rabbitmq Subscribe
Rabbitmq-server Subscribe

Project Subscriptions

Vendors Products
Rabbitmq Subscribe
Rabbitmq-server Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 cve-icon cve-icon
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-c8c4-gvv4-8j3q cve-icon cve-icon
History

Sat, 26 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Rabbitmq
Rabbitmq rabbitmq-server
Vendors & Products Rabbitmq
Rabbitmq rabbitmq-server

Fri, 25 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Description RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's declared length before buffering the frame. With the stream plugin enabled, a remote client could therefore cause excessive memory pressure and denial of service by declaring an oversized frame. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.
Title RabbitMQ: Stream-protocol frame length never validated against frame_max
Weaknesses CWE-770
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-25T16:42:34.568Z

Reserved: 2026-07-28T19:50:39.437Z

Link: CVE-2026-67225

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-25T17:17:10.827

Modified: 2026-09-25T17:17:10.827

Link: CVE-2026-67225

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-26T11:30:09Z

Weaknesses