CVE WatchJul 13, 2026

CVE-2026-57220

RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size

CVSS

7.5

High

EPSS

0.5%

p40

KEV

—

Exploit Today

0-100

Published: Jul 10, 2026 · Last modified: Jul 13, 2026 · CWE-770

EPSS · 30d

0.4%EPSS · 30 days0.5%

2026-07-112026-07-17

Technical 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.

Official references

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