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Vulnerability record · CVE-2026-57220 · published 10 July 2026

CVE-2026-57220: Broadcom rabbitmq server allocation without limits vulnerability

Broadcom · Rabbitmq Server

RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.

7.5 CVSS 3.1 High EPSS 0.55% · top 56.4% CWE-770 · Allocation without limits
7.5CVSS 3.1 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References, 2 tagged exploit
13 Jul 2026Last modified by NVD

Description

RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547 Patch
https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e Patch
https://github.com/rabbitmq/rabbitmq-server/pull/16171 Issue TrackingPatch
https://github.com/rabbitmq/rabbitmq-server/pull/16173 Issue TrackingPatch
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 Release Notes
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q ExploitVendor Advisory
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-57211Broadcom rabbitmq server server-side request forgery (ssrf) vulnerabilityRabbitMQ 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…EPSS 0.63%10.0CVE-2026-57216Broadcom rabbitmq server improper authentication vulnerabilityRabbitMQ 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 c…EPSS 0.50%9.8CVE-2016-9877Broadcom rabbitmq server improper access control vulnerabilityAn issue was discovered in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6 and RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1.6.12, an…EPSS 1.4%8.7CVE-2026-57219Broadcom rabbitmq server information exposure vulnerabilityRabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the obsolete GET /api/auth endpoint can disclose the OAuth…EPSS 2.8%7.8CVE-2021-22117Broadcom rabbitmq server code injection vulnerabilityRabbitMQ installers on Windows prior to version 3.8.16 do not harden plugin directory permissions, potentially allowing attackers with sufficient loc…EPSS 0.61%7.8CVE-2017-4966Broadcom rabbitmq server information exposure vulnerabilityAn issue was discovered in these Pivotal RabbitMQ versions: all 3.4.x versions, all 3.5.x versions, and 3.6.x versions prior to 3.6.9; and these Rabb…EPSS 0.37%7.5CVE-2022-31008Broadcom rabbitmq server vulnerabilityRabbitMQ is a multi-protocol messaging and streaming broker. In affected versions the shovel and federation plugins perform URI obfuscation in their …EPSS 0.34%7.5CVE-2019-11287Broadcom rabbitmq server uncontrolled resource consumption vulnerabilityPivotal RabbitMQ, versions 3.7.x prior to 3.7.21 and 3.8.x prior to 3.8.1, and RabbitMQ for Pivotal Platform, 1.16.x versions prior to 1.16.7 and 1.1…EPSS 4.4%

Source: NIST National Vulnerability Database (record CVE-2026-57220), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.