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 improper memory allocation when processing a wire-declared content length in the ValueReader.readBytes method. A malicious AMQP peer can trigger an excessive memory allocation of approximately 2 GB during the pre-authentication phase, leading to an OutOfMemoryError and denial of service by terminating the JVM. This issue is fixed in version 5.33.1.
AI Analysis
Technical Summary
The RabbitMQ Java client library versions before 5.33.1 contain a vulnerability in the ValueReader.readBytes method located in src/main/java/com/rabbitmq/client/impl/ValueReader.java. The method accepts a wire-declared contentLength below Integer.MAX_VALUE and allocates a byte array accordingly before verifying the actual bytes available in the frame. An attacker controlling an AMQP peer can send a LongString or byte-array field with a type tag S and a declared length close to 0x7FFFFFFE during the connection.start server-properties table in the pre-authentication phase. This causes the client to allocate roughly 2 GB of memory, resulting in an OutOfMemoryError and JVM termination, causing denial of service. The vulnerability is addressed and fixed in version 5.33.1.
Potential Impact
Successful exploitation leads to memory exhaustion in the JVM running the RabbitMQ Java client, causing an OutOfMemoryError and termination of the JVM process. This results in a denial of service condition. There is no indication of privilege escalation, data leakage, or code execution from the provided data.
Mitigation Recommendations
Upgrade the rabbitmq-java-client library to version 5.33.1 or later, where this vulnerability is fixed. No other mitigations are indicated or required according to the available information.
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 improper memory allocation when processing a wire-declared content length in the ValueReader.readBytes method. A malicious AMQP peer can trigger an excessive memory allocation of approximately 2 GB during the pre-authentication phase, leading to an OutOfMemoryError and denial of service by terminating the JVM. This issue is fixed in version 5.33.1.
CVSS v4.0
Score 8.7high
Affected software
rabbitmq
rabbitmq-java-client
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 vulnerability in the ValueReader.readBytes method located in src/main/java/com/rabbitmq/client/impl/ValueReader.java. The method accepts a wire-declared contentLength below Integer.MAX_VALUE and allocates a byte array accordingly before verifying the actual bytes available in the frame. An attacker controlling an AMQP peer can send a LongString or byte-array field with a type tag S and a declared length close to 0x7FFFFFFE during the connection.start server-properties table in the pre-authentication phase. This causes the client to allocate roughly 2 GB of memory, resulting in an OutOfMemoryError and JVM termination, causing denial of service. The vulnerability is addressed and fixed in version 5.33.1.
Potential Impact
Successful exploitation leads to memory exhaustion in the JVM running the RabbitMQ Java client, causing an OutOfMemoryError and termination of the JVM process. This results in a denial of service condition. There is no indication of privilege escalation, data leakage, or code execution from the provided data.
Mitigation Recommendations
Upgrade the rabbitmq-java-client library to version 5.33.1 or later, where this vulnerability is fixed. No other mitigations are indicated or required according to the available information.
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
Threat ID: 6a8489bac6e8be0332782807
Added to database: 08/18/2026, 16:35:06 UTC
Last enriched: 09/11/2026, 21:18:45 UTC
Last updated: 10/02/2026, 14:46:10 UTC
Views: 82
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