SB20261110287 - Allocation of Resources Without Limits or Throttling in RabbitMQ C client

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Main Vulnerability Database SB20261110287

SB20261110287 - Allocation of Resources Without Limits or Throttling in RabbitMQ C client

Published: November 10, 2026

Security Bulletin ID SB20261110287
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Allocation of Resources Without Limits or Throttling (CVE-ID: N/A)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to exhaust client memory and cause a denial of service.

The vulnerability exists due to unchecked resource allocation in the RabbitMQ C client's AMQP frame parser when allocating channel pools before validating channels and frame types, with ignored frames retaining pool pages. A remote attacker can control an AMQP peer or intercept plaintext AMQP traffic and send a sustained stream of small frames with unknown types such as 0xff or channels exceeding the negotiated channel_max to exhaust memory and potentially terminate the client.


Remediation

Install update from vendor's website.

References