CVE-2026-67414 RabbitMQ AMQP 1.0 parser: amplification memory-exhaustion DoS via zero-width array aggregation

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.24, 4.1.15, 4.2.10, and 4.3.4, deps/amqp10common/src/amqp10binaryparser.erl materializes each element of AMQP 1.0 arrays whose shared constructor has zero width, while limiting only the number of elements in each array and not the...

CVE-2026-67414

The RabbitMQ messaging and streaming broker is vulnerable to a memory-exhaustion Denial of Service (DoS) in versions prior to 4.0.24, 4.1.15, 4.2.10, and 4.3.4 . The root cause is located in deps/amqp10_common/src/amqp10_binary_parser.erl, where the parser materializes elements of AMQP 1.0 arrays...

CVE-2026-67416 RabbitMQ: AMQP 1.0 symbolic body descriptor prefix collisions bypass validation

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.24, 4.1.15, 4.2.10, and 4.3.4, the optimized AMQP 1.0 servermode parser in deps/amqp10common/src/amqp10binaryparser.erl matches the textual prefixes of symbolic data, sequence, and value body descriptors without verifying their...

CVE-2026-67416

RabbitMQ versions 4.0.0 to 4.0.24 , 4.1.15 , 4.2.10 , and 4.3.4 are vulnerable to a prefix collision in the optimized AMQP 1.0 server_mode parser located in deps/amqp10_common/src/amqp10_binary_parser.erl. The parser fails to verify encoded symbol lengths, allowing an authenticated AMQP 1.0 publi...