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Advisory record · GHSA-jh4v-gfqj-7rhx

RabbitMQ Java client has frame-level OOM: Math.min(maxInboundMessageBodySize, 0) defeats frame size enforcement

CVSS 8.7 HighEPSS 0.0055 · 46th percentile

Published by the GitHub Advisory Database at 17 Sept 2026, 14:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.rabbitmq:amqp-clientMaven<5.34.05.34.0
Identifiers
GHSA-jh4v-gfqj-7rhx · CVE-2026-75516
Weakness (CWE)
CWE-770
Tags
Published
17 Sept 2026
Updated
17 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The RabbitMQ Java client (com.rabbitmq:amqp-client, Maven) versions before 5.34.0 are affected. When the negotiated frame-max is 0, the client's frame size limit is disabled, so a malicious AMQP server or man-in-the-middle can send a single oversized frame that causes the client to allocate up to about 2 GB and crash with an out-of-memory error. Upgrade to version 5.34.0 or later.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.7 High 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0055, the 46th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.