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 uses ValueReader.readBytes to accept a wire-declared contentLength below Integer.MAX_VALUE and allocate a byte array before checking the bytes available in the frame. A malicious AMQP peer can send a LongString or byte-array field with type tag S and a declared length such as 0x7FFFFFFE during the pre-authentication connection.start server-properties table, causing an approximately 2 GB allocation and OutOfMemoryError before readFully consumes data. The resulting memory exhaustion can terminate the JVM and cause denial of service. This issue is fixed in version 5.33.1.
Metrics
Affected Vendors & Products
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History
Fri, 21 Aug 2026 21:45:00 +0000
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Rabbitmq
Rabbitmq java-client |
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Rabbitmq
Rabbitmq java-client |
Wed, 19 Aug 2026 15:30:00 +0000
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ssvc
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Tue, 18 Aug 2026 16:30:00 +0000
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| 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 uses ValueReader.readBytes to accept a wire-declared contentLength below Integer.MAX_VALUE and allocate a byte array before checking the bytes available in the frame. A malicious AMQP peer can send a LongString or byte-array field with type tag S and a declared length such as 0x7FFFFFFE during the pre-authentication connection.start server-properties table, causing an approximately 2 GB allocation and OutOfMemoryError before readFully consumes data. The resulting memory exhaustion can terminate the JVM and cause denial of service. This issue is fixed in version 5.33.1. | |
| Title | RabbitMQ Java client ValueReader: Oversized LongString/bytes length triggers OOM via unchecked allocation | |
| Weaknesses | CWE-789 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-08-18T16:23:32.097Z
Updated: 2026-08-19T14:51:36.499Z
Reserved: 2026-08-03T16:57:50.125Z
Link: CVE-2026-69219
Updated: 2026-08-19T14:51:32.697Z
Status : Received
Published: 2026-08-18T17:17:01.353
Modified: 2026-08-19T15:17:55.357
Link: CVE-2026-69219
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