Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Broadcom | Rabbitmq Server | < 4.2.6 |
Related Weaknesses (CWE)
References
- https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e046Patch
- https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c3Patch
- https://github.com/rabbitmq/rabbitmq-server/pull/16171Issue TrackingPatch
- https://github.com/rabbitmq/rabbitmq-server/pull/16173Issue TrackingPatch
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6Release Notes
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-jExploitVendor Advisory
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-jExploitVendor Advisory
FAQ
What is CVE-2026-57220?
CVE-2026-57220 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 bef...
How severe is CVE-2026-57220?
CVE-2026-57220 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-57220?
Check the references section above for vendor advisories and patch information. Affected products include: Broadcom Rabbitmq Server.