CVE-2026-69219: CWE-789: Memory Allocation with Excessive Size Value in rabbitmq rabbitmq-java-client
CVE-2026-69219 is a high severity vulnerability in the rabbitmq-java-client library prior to version 5.33.1. It involves a memory allocation issue where a malicious AMQP peer can cause the client to allocate approximately 2 GB of memory by sending a specially crafted LongString or byte-array field with an excessively large declared length. This leads to an OutOfMemoryError and denial of service by terminating the JVM. The issue is fixed in version 5.33.1.
AI Analysis
Technical Summary
The RabbitMQ Java client library versions before 5.33.1 contain a memory allocation vulnerability (CWE-789) in the ValueReader.readBytes method. This method accepts a wire-declared contentLength below Integer.MAX_VALUE and allocates a byte array before verifying the actual bytes available in the frame. A malicious AMQP peer can exploit this by sending a LongString or byte-array field with a large declared length (e.g., 0x7FFFFFFE) during the pre-authentication connection.start server-properties table, causing the client to allocate around 2 GB of memory. This excessive allocation results in an OutOfMemoryError, terminating the JVM and causing denial of service. The vulnerability is addressed in version 5.33.1.
Potential Impact
Exploitation of this vulnerability allows a remote attacker controlling an AMQP peer to cause the RabbitMQ Java client to allocate excessive memory, leading to an OutOfMemoryError and JVM termination. This results in a denial of service condition for applications using the affected client versions.
Mitigation Recommendations
This vulnerability is fixed in rabbitmq-java-client version 5.33.1. Users should upgrade to version 5.33.1 or later to remediate this issue. No other mitigation or workaround is documented.
CVE-2026-69219: CWE-789: Memory Allocation with Excessive Size Value in rabbitmq rabbitmq-java-client
Description
CVE-2026-69219 is a high severity vulnerability in the rabbitmq-java-client library prior to version 5.33.1. It involves a memory allocation issue where a malicious AMQP peer can cause the client to allocate approximately 2 GB of memory by sending a specially crafted LongString or byte-array field with an excessively large declared length. This leads to an OutOfMemoryError and denial of service by terminating the JVM. The issue is fixed in version 5.33.1.
CVSS v4.0
Score 8.7high
Affected software
pkg:maven/com.rabbitmq/rabbitmq-java-clientRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The RabbitMQ Java client library versions before 5.33.1 contain a memory allocation vulnerability (CWE-789) in the ValueReader.readBytes method. This method accepts a wire-declared contentLength below Integer.MAX_VALUE and allocates a byte array before verifying the actual bytes available in the frame. A malicious AMQP peer can exploit this by sending a LongString or byte-array field with a large declared length (e.g., 0x7FFFFFFE) during the pre-authentication connection.start server-properties table, causing the client to allocate around 2 GB of memory. This excessive allocation results in an OutOfMemoryError, terminating the JVM and causing denial of service. The vulnerability is addressed in version 5.33.1.
Potential Impact
Exploitation of this vulnerability allows a remote attacker controlling an AMQP peer to cause the RabbitMQ Java client to allocate excessive memory, leading to an OutOfMemoryError and JVM termination. This results in a denial of service condition for applications using the affected client versions.
Mitigation Recommendations
This vulnerability is fixed in rabbitmq-java-client version 5.33.1. Users should upgrade to version 5.33.1 or later to remediate this issue. No other mitigation or workaround is documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-03T16:57:50.125Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8489bac6e8be0332782807
Added to database: 08/18/2026, 16:35:06 UTC
Last enriched: 08/18/2026, 16:49:39 UTC
Last updated: 08/18/2026, 17:20:31 UTC
Views: 6
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