CVE-2026-57220CWE-770denial-of-service

CVE-2026-57220

High · published July 11, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
45.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00547 · 45.1th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-07-11T01:16Z
Affected products (1)
ProductVersionsFixed in
broadcom/rabbitmq_server≥ 4.2.0, < 4.2.64.2.6
References (7)
https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547 · [email protected]https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e · [email protected]https://github.com/rabbitmq/rabbitmq-server/pull/16171 · [email protected]https://github.com/rabbitmq/rabbitmq-server/pull/16173 · [email protected]https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 · [email protected]https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q · [email protected]https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 10 JUL 20:19Z
    RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoS
    cvelistv5