AUGUST 26, 2026
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Case File

CVE-2026-57220

HIGH · CVSS 7.5 EPSS 0.55% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-10 · Last synced 2026-08-09

CyberRota Analysis

AI-Generated

RabbitMQ versions prior to 4.2.6 are vulnerable due to a flaw in the stream listener that fails to enforce the configured frame-size limit during authentication, enabling unauthenticated remote clients to specify oversized frame lengths. This can lead to excessive memory consumption on the broker, potentially resulting in denial-of-service conditions. Organizations using affected versions of RabbitMQ should prioritize upgrading to version 4.2.6 to mitigate this high-severity vulnerability.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-57220
Severity
HIGH
CVSS
7.5
EPSS
0.55%

Original NVD 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.

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