{"api_version":"1","generated_at":"2026-10-24T10:55:51+00:00","cve":"CVE-2026-67414","urls":{"html":"https://cve.report/CVE-2026-67414","api":"https://cve.report/api/cve/CVE-2026-67414.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-67414","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-67414"},"summary":{"title":"RabbitMQ AMQP 1.0 parser: amplification memory-exhaustion DoS via zero-width array aggregation","description":"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/amqp10_common/src/amqp10_binary_parser.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 aggregate arrays in a frame. After completing SASL authentication, a low-privilege client can send an ordinary frame containing many individually permitted arrays, causing a small frame to expand into a very large reader-process heap before later frame validation or authorization. Because deps/rabbit/src/rabbit_amqp_reader.erl clears the pre-authentication max_heap_size guard after login, repeated or concurrent frames can trigger the node-wide memory alarm, block publishers, or exhaust broker memory. 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