CVE-2026-57220

RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoS

Published: Jul 10, 2026Updated: Jul 13, 2026 Sources: CVE List NVDCWE-770

7.5HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

Open in CVSS calculator →

Weaknesses

CWE-770

Affected Products

rabbitmq

oss-project·GBaka rabbitmq-server

rabbitmq-serverOn-prem

Databases / cache-message-queue

broadcom

commercial·USaka broadcom inc

rabbitmq serverOn-prem

Cloud & SaaS

Exploitability

Official Patch Available

Is your org exposed to CVE-2026-57220?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique

Impact

View detailed technique mapping

References

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q

github.com

https://github.com/rabbitmq/rabbitmq-server/pull/16171

github.com

https://github.com/rabbitmq/rabbitmq-server/pull/16173

github.com

and 3 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-57220 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows