CVE-2026-57220

HighCVSS 7.5/10Last modified Oct 25, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

No affected versions have been published.

Timeline

Published
Jul 10, 2026
Last modified
Oct 25, 2026
NVD status
Analyzed

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CVE-2026-57220: High severity, CVSS 7.5 | Vulnix