CVE-2026-67225
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Broadcom Rabbitmq Server
PublishedSep 25, 2026
First seenSep 25, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- broadcom rabbitmq_server3.13.15, 4.0.20, 4.1.11, 4.2.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| broadcom rabbitmq_server | 3.13.0 ≤ v < 3.13.15, 4.0.0 ≤ v < 4.0.20, 4.1.0 ≤ v < 4.1.11, 4.2.0 ≤ v < 4.2.6 | 3.13.15, 4.0.20, 4.1.11, 4.2.6 |
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