{"id":"CVE-2017-7653","details":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","modified":"2026-04-10T04:00:58.796860Z","published":"2018-06-05T20:29:00.293Z","references":[{"type":"WEB","url":"https://usn.ubuntu.com/4023-1/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4325"},{"type":"ADVISORY","url":"http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf"},{"type":"REPORT","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eclipse/mosquitto","events":[{"introduced":"0"},{"last_affected":"4f838e51611b9a71f2e3e98e6fddd02a5c1b4c03"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.4.15"}]}}],"versions":["v1.4.1","v1.4.10","v1.4.11","v1.4.12","v1.4.13","v1.4.14","v1.4.15","v1.4.2","v1.4.3","v1.4.4","v1.4.5","v1.4.6","v1.4.7","v1.4.8","v1.4.9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-7653.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}