Resource exhaustion in Broadcom Rabbitmq Server
CVE-2026-67225
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (28.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Broadcom Rabbitmq Server
- Rabbitmq Rabbitmq-Server — versions >= 3.13.0, < 3.13.15, >= 4.0.0, < 4.0.20, >= 4.1.0, < 4.1.11
Weakness classification (CWE)
References
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-c8c4-gvv4-8j3q (Vendor Advisory)
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 (Patch, Release Notes)
Frequently asked questions
- What is CVE-2026-67225?
- CVE-2026-67225 is a high-severity vulnerability in Broadcom Rabbitmq Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-09-25.
- How severe is CVE-2026-67225?
- High severity. CVSS v3 base score is 7.5 out of 10.