CVE-2023-46120

RabbitMQ Java client's lack of message size limitation leads to remote DoS attack

HIGH
7.5
CVSS Score
Published: October 24, 2023 at 11:05 PM UTC
Updated: June 17, 2026 at 06:30 AM UTC
2 products affected across 2 vendorsRabbitmq Java ClientRabbitmq Java Client

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
PoC

Description

The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. `maxBodyLebgth` was not used when receiving Message objects. Attackers could send a very large Message causing a memory overflow and triggering an OOM Error. Users of RabbitMQ may suffer from DoS attacks from RabbitMQ Java client which will ultimately exhaust the memory of the consumer. This vulnerability was patched in version 5.18.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.18.0
Affected range stops below 5.18.0, so it looks safe — our inference, not a vendor statement
v < 5.18.0
Affected range stops below 5.18.0, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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