mosquitto — security advisory
In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.
- Products
- mosquitto
- Affected versions
- Not specified
- Fixed versions
- 1.5.6-1
- CVEs
- CVE-2018-12546
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:52 UTC · Revision 1
Source evidence
In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.
osv:DEBIAN-CVE-2018-12546
mosquitto
Fixed versions: 1.5.6-1
mosquitto
Fixed versions: 1.5.6-1
mosquitto
Fixed versions: 1.5.6-1
Complete source record
{
"id": "3c59d03da6d797fe7ccfa772af39f877c84323a787a72e34ebeda681a9f3cb55",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-12546",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-12546",
"summary": "In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.",
"evidence": "osv:DEBIAN-CVE-2018-12546",
"products": [
{
"name": {
"value": "mosquitto",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.5.6-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mosquitto",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.5.6-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mosquitto",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.5.6-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2018-12546",
"aliases": [
"DEBIAN-CVE-2018-12546"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.6-1"
}
]
}
],
"package": {
"name": "mosquitto",
"purl": "pkg:deb/debian/mosquitto?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-12546.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.6-1"
}
]
}
],
"package": {
"name": "mosquitto",
"purl": "pkg:deb/debian/mosquitto?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-12546.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.6-1"
}
]
}
],
"package": {
"name": "mosquitto",
"purl": "pkg:deb/debian/mosquitto?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-12546.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:53.929897430Z",
"provider": "osv",
"upstream": [
"CVE-2018-12546"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-12546"
]
},
"related_cves": [
{
"value": "CVE-2018-12546",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 422542,
"published_at": "2019-03-27T18:29:00.24+00:00"
}