CVE-2026-21888

CVE-2026-21888 affects NanoMQ (MQTT v5) where get_var_integer() in the Variable Byte Integer parser accepts 5-byte varints without bounds checks, causing an out-of-bounds read and potential crash when built with ASan. Impact is described as high severity (CVSSv3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N...