CVE-2026-69220
Received Received - Intake

Stack Overflow in RabbitMQ Java Client Library

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: GitHub, Inc.

Description
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.33.1, src/main/java/com/rabbitmq/client/impl/ValueReader.java permits ValueReader.readTable and ValueReader.readArray to call ValueReader.readFieldValue recursively for AMQP table type F and AMQP array type A values without a nesting-depth limit. A malicious AMQP server or network intermediary can send approximately 580 nested table levels in the pre-authentication connection.start frame, fitting within the default 131072-byte frame maximum, to trigger StackOverflowError. The error terminates the client input processing thread and causes denial of service. This issue is fixed in version 5.33.1.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-09-07
AI Q&A
2026-08-18
EPSS Evaluated
2026-09-06
NVD
CVE-2026-69220
EUVD
EUVD-2026-61042

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
rabbitmq rabbitmq_java_client 5.33.1

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability affects the RabbitMQ Java client library versions prior to 5.33.1. It allows a malicious AMQP server or network intermediary to send deeply nested table structures (approximately 580 levels) in the connection.start frame. This triggers unbounded recursive calls in ValueReader.readTable and ValueReader.readArray methods, causing a StackOverflowError that crashes the client's input processing thread and results in a denial of service.

Detection Guidance

To detect this vulnerability, check the version of the RabbitMQ Java client library in use. If it is version 5.33.0 or earlier, the system is vulnerable. Commands like 'mvn dependency:tree' for Maven projects or inspecting the JAR manifest can help identify the library version.

Impact Analysis

If you use a vulnerable version of the RabbitMQ Java client library (<=5.33.0), an attacker could exploit this to crash your application by sending a maliciously crafted connection request. This would terminate the client thread handling the connection, causing your application to lose connectivity to RabbitMQ and fail to process messages until restarted.

Compliance Impact

This vulnerability primarily impacts availability by causing denial of service through stack overflow errors. It does not directly affect data confidentiality or integrity, which are key concerns for GDPR and HIPAA. However, prolonged denial of service could indirectly impact compliance by disrupting systems handling sensitive data.

Mitigation Strategies

Upgrade the RabbitMQ Java client library to version 5.33.1 or later. This version includes a fix that limits nesting depth to 32 levels, preventing stack overflow errors from malicious input.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-69220. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart