{"id":"CVE-2023-28366","aliases":["ALPINE-CVE-2023-28366","BELL-CVE-2023-28366","DEBIAN-CVE-2023-28366","DSA-5511-1","EUVD-2023-32063","GHSA-897v-899r-j3hg","MGASA-2025-0106","OESA-2023-1658","OESA-2023-1659","OESA-2023-1680","RHSA-2024:0797","RHSA-2024:1061","UBUNTU-CVE-2023-28366","USN-6492-1","openSUSE-SU-2024:13546-1"],"status":"published","title":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be...","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0131,"percentile":0.70845,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-401"],"published":"2023-08-31T12:14:55.612128Z","modified":"2026-10-28T10:32:44Z","fixes":[{"ecosystem":"Alpine:v3.18","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"mosquitto","fixed_in":["2.0.16-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"mosquitto","fixed_in":["2.0.11-1.2+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mosquitto","fixed_in":["2.0.17-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mosquitto","fixed_in":["2.0.17-1"],"sources":["osv"]},{"ecosystem":"Mageia:9","package":"mosquitto","fixed_in":["2.0.21-1.mga9"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP1","package":"mosquitto","fixed_in":["2.0.16-1.oe2203sp1"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP2","package":"mosquitto","fixed_in":["2.0.16-1.oe2203sp2"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS","package":"mosquitto","fixed_in":["2.0.16-1.oe2203"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"mosquitto","fixed_in":["2.0.11-1ubuntu1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.18","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.2"},{"fixed":"2.0.16-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11-1.2+deb12u1"}]}],"versions":["2.0.11-1.2"]},{"source":"osv","ecosystem":"Debian:13","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.17-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.17-1"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11-1+deb11u1"}]}],"versions":["2.0.11-1"],"bundled":4},{"source":"osv","ecosystem":"Debian:12","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11-1.2+deb12u1"}]}],"versions":["2.0.11-1.2"],"bundled":4},{"source":"osv","ecosystem":"Mageia:9","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.21-1.mga9"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP1","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.16-1.oe2203sp1"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP2","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.16-1.oe2203sp2"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.16-1.oe2203"}]}]},{"source":"osv","ecosystem":"Red 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ity/cve/CVE-2023-28366","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-3592","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2023-28366","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T00:00:00Z","modified":"2025-06-26T13:59:02.058Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:35:32.376766Z"}],"euvd":[{"id":"EUVD-2023-32063","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T00:00:00Z","modified":"2025-06-26T13:59:02Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:32:16.561416Z"}],"ghsa":[{"id":"GHSA-897v-899r-j3hg","title":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be...","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T18:30:41Z","modified":"2025-06-26T18:32:25Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:02:49.372577Z"}],"nvd":[{"id":"CVE-2023-28366","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T16:15:07.79Z","modified":"2026-06-17T05:47:33.34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:08:27.181588Z"}],"osv":[{"id":"ALPINE-CVE-2023-28366","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T16:15:07.79Z","modified":"2026-10-26T17:17:58.618286916Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:49.202584Z"},{"id":"BELL-CVE-2023-28366","title":"CVE-2023-28366 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:14:55.612128Z","modified":"2026-01-26T09:48:47.878006Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:17.742221Z"},{"id":"CVE-2023-28366","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T00:00:00Z","modified":"2026-10-28T10:32:44.149781164Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:31.468318Z"},{"id":"DEBIAN-CVE-2023-28366","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T16:15:07.79Z","modified":"2026-10-26T18:00:47.890868415Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.679062Z"},{"id":"OESA-2023-1658","title":"mosquitto security update","description":"Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1 and 3.1.1 MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for \u0026quot;machine to machine\u0026quot; messaging such as with low power sensors or mobile devices such as phones, embedded computers or micro-controllers like the Arduino.\r\n\r\nSecurity Fix(es):\r\n\r\nThe broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.(CVE-2023-28366)","status":"published","published":"2023-09-15T11:06:06Z","modified":"2026-08-18T01:17:04.724270621Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1659","title":"mosquitto security update","description":"Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1 and 3.1.1 MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for \u0026quot;machine to machine\u0026quot; messaging such as with low power sensors or mobile devices such as phones, embedded computers or micro-controllers like the Arduino.\r\n\r\nSecurity Fix(es):\r\n\r\nThe broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.(CVE-2023-28366)","status":"published","published":"2023-09-15T11:06:06Z","modified":"2026-08-18T01:17:04.678338494Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1680","title":"mosquitto security update","description":"Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1 and 3.1.1 MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for \u0026quot;machine to machine\u0026quot; messaging such as with low power sensors or mobile devices such as phones, embedded computers or micro-controllers like the Arduino.\r\n\r\nSecurity Fix(es):\r\n\r\nThe broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.(CVE-2023-28366)","status":"published","published":"2023-09-22T11:06:08Z","modified":"2026-08-18T01:17:04.968986147Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"RHSA-2024:0797","title":"Red Hat Security Advisory: Satellite 6.14.2 Async Security Update","status":"published","published":"2024-09-30T07:12:50Z","modified":"2026-10-15T10:06:58Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:1061","title":"Red Hat Security Advisory: Red Hat Satellite 6 security and bug fix update","status":"published","published":"2024-09-16T17:34:41Z","modified":"2026-06-26T12:22:22.133003512Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"UBUNTU-CVE-2023-28366","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.","status":"published","published":"2023-09-01T16:15:00Z","modified":"2026-04-22T14:05:03.021494Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:20.997471Z"},{"id":"DSA-5511-1","title":"mosquitto - security update","status":"published","published":"2023-10-01T00:00:00Z","modified":"2026-03-09T02:10:31.291593Z","updated_at":"2026-11-02T15:46:17.892347Z"},{"id":"MGASA-2025-0106","title":"Updated mosquitto packages fix security vulnerability","description":"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a\nmemory leak that can be abused remotely when a client sends many QoS 2\nmessages with duplicate message IDs, and fails to respond to PUBREC\ncommands. This occurs because of mishandling of EAGAIN from the libc\nsend function.\n","status":"published","published":"2025-03-19T23:44:37Z","modified":"2026-04-16T04:44:15.629656375Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2024:13546-1","title":"libmosquitto1-2.0.18-1.1 on GA media","description":"These are all security issues fixed in the libmosquitto1-2.0.18-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:09:01.63401Z","updated_at":"2026-11-02T16:58:36.327643Z"},{"id":"USN-6492-1","title":"mosquitto vulnerabilities","description":"Kathrin Kleinhammer discovered that Mosquitto incorrectly handled certain\ninputs. If a user or an automated system were provided with a specially crafted\ninput, a remote attacker could possibly use this issue to cause a denial of\nservice. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-34431)\n\nZhanxiang Song discovered that Mosquitto incorrectly handled certain inputs. If\na user or an automated system were provided with a specially crafted input, a\nremote attacker could possibly use this issue to cause an authorisation bypass.\nThis issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2021-34434)\n\nZhanxiang Song, Bin Yuan, DeQing Zou, and Hai Jin discovered that Mosquitto\nincorrectly handled certain inputs. If a user or an automated system were\nprovided with a specially crafted input, a remote attacker could possibly use\nthis issue to cause a denial of service. This issue only affected Ubuntu 20.04\nLTS and Ubuntu 22.04 LTS. (CVE-2021-41039)\n\nZhengjie Du discovered that Mosquitto incorrectly handled certain inputs. If a\nuser or an automated system were provided with a specially crafted input file,\na remote attacker could possibly use this issue to cause a denial of service.\n(CVE-2023-0809)\n\nIt was discovered that Mosquitto incorrectly handled certain inputs. If a user\nor an automated system were provided with a specially crafted input, a remote\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2023-3592)\n\nMischa Bachmann discovered that Mosquitto incorrectly handled certain inputs.\nIf a user or an automated system were provided with a specially crafted input,\na remote attacker could possibly use this issue to cause a denial of service.\nThis issue was only fixed in Ubuntu 22.04 LTS and Ubuntu 23.04.\n(CVE-2023-28366)\n","status":"published","published":"2023-11-21T15:23:51Z","modified":"2026-04-22T10:41:36.101799Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}