CVE-2026-69219
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
RabbitMQ Java client library before 5.33.1 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 field with type tag S and a declared length such as 0x7FFFFFFE, causing an approximately 2 GB allocation and OutOfMemoryError, potentially terminating the JVM and causing denial of service.
Risk Assessment
An attacker can cause memory exhaustion and JVM termination, leading to application unavailability.
Recommendation
Upgrade the RabbitMQ Java client library to version 5.33.1 or later.
Original NVD description (English source)
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.