CVE-2026-57220
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Broadcom Rabbitmq Server
PublishedJul 10, 2026
First seenJul 10, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- broadcom rabbitmq_server4.2.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| broadcom rabbitmq_server | 4.2.0 ≤ v < 4.2.6 | 4.2.6 |
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