{"id":"CVE-2018-12543","aliases":["ALPINE-CVE-2018-12543","BELL-CVE-2018-12543","EUVD-2018-4505","GHSA-4g6q-vx9q-q84r","openSUSE-SU-2024:11057-1"],"status":"published","title":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that...","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.36013,"percentile":0.98484,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-617"],"published":"2018-11-15T15:00:00Z","modified":"2026-10-24T10:30:25Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"mosquitto","fixed_in":["1.5.3-r0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.11","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.12","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.9","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.3-r0"}]}]}],"products":[{"vendor":"eclipse","product":"mosquitto"},{"vendor":"the eclipse foundation","product":"eclipse mosquitto"}],"references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=539295","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12543"},{"url":"https://github.com/advisories/GHSA-4g6q-vx9q-q84r"},{"url":"https://security.alpinelinux.org/vuln/CVE-2018-12543","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2018-12543","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7650","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7651","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7652","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-9868","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12543","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12546","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12550","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12551","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-20145","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-11778","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-11779","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-28166","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-12543","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","status":"published","published":"2018-11-15T15:00:00Z","modified":"2024-08-05T08:38:06.301Z","cwes":["CWE-617"],"updated_at":"2026-11-02T14:35:06.320867Z"}],"euvd":[{"id":"EUVD-2018-4505","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","status":"published","published":"2018-11-15T15:00:00Z","modified":"2024-08-05T08:38:06Z","updated_at":"2026-11-03T02:39:52.61924Z"}],"ghsa":[{"id":"GHSA-4g6q-vx9q-q84r","title":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that...","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","status":"published","published":"2022-05-13T01:34:45Z","modified":"2023-02-01T05:08:45Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:50:51.059157Z"}],"nvd":[{"id":"CVE-2018-12543","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","status":"published","published":"2018-11-15T15:29:01.35Z","modified":"2026-06-17T01:37:56.77Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-617","CWE-20"],"updated_at":"2026-11-02T14:04:48.987926Z"}],"osv":[{"id":"ALPINE-CVE-2018-12543","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","status":"published","published":"2018-11-15T15:29:01.35Z","modified":"2026-10-23T17:17:55.209073291Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:47.187336Z"},{"id":"BELL-CVE-2018-12543","title":"CVE-2018-12543 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:15:20.592207Z","modified":"2026-01-26T09:46:21.848689Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:14.701973Z"},{"id":"CVE-2018-12543","description":"In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.","status":"published","published":"2018-11-15T15:29:01.35Z","modified":"2026-10-24T10:30:25.844040878Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:07.934182Z"},{"id":"openSUSE-SU-2024:11057-1","title":"libmosquitto1-2.0.11-1.2 on GA media","description":"These are all security issues fixed in the libmosquitto1-2.0.11-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:24:30.951191Z","updated_at":"2026-11-02T16:58:34.894275Z"}]}}