{"id":"CVE-2020-27217","aliases":["GHSA-9f52-hpvw-v96w"],"url":"https://o3.security/vulnerability/CVE-2020-27217","summary":"Improper Validation of Specified Quantity in Input in Eclipse Hono","details":"In Eclipse Hono version 1.3.0 and 1.4.0 the AMQP protocol adapter does not verify the size of AMQP messages received from devices. In particular, a device may send messages that are bigger than the max-message-size that the protocol adapter has indicated during link establishment. While the AMQP 1.0 protocol explicitly disallows a peer to send such messages, a hand crafted AMQP 1.0 client could exploit this behavior in order to send a message of unlimited size to the adapter, eventually causing the adapter to fail with an out of memory exception.","published":"2020-11-13T20:15:16.270Z","modified":"2026-08-27T08:40:04.289182Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.eclipse.hono:hono-core","fixedVersion":"1.4.3"}],"fix":null,"references":[{"type":"REPORT","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=567068"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27217"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T08:40:04.289182Z"}}