MediumFix available
rabbitmq-server — security advisory
RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1, Atom exhaustion: toatom on global-parameter :name. resourceexists/2 (and the PUT/DELETE handlers) call rabbitdatacoercion:toatom/1 on the :name URL path segment. toatom/1 uses binarytoatom/2 (unsafe). The endpoint requires policymaker (not management, but below A user with the policymaker tag can crash the node by exhausting the atom table via repeated requests to /api/global-parameters/:name with unique :name Management plugin enabled policymaker tag ~1M HTTP. This issue is fixed in versions 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1.
- Products
- rabbitmq-server
- Affected versions
- 3.10.8-1.1, 3.10.8-1.1+deb12u1, 3.10.8-2, 3.10.8-3, 3.10.8-4, 3.12.1-1, 3.12.1-1.1, 4.0.5-1, 4.0.5-10, 4.0.5-11, 4.0.5-12, 4.0.5-13, 4.0.5-14, 4.0.5-2, 4.0.5-3, 4.0.5-4, 4.0.5-5, 4.0.5-6, 4.0.5-6+deb13u1, 4.0.5-6+deb13u2, 4.0.5-8, 4.0.5-9, 4.3.0-1, 4.3.0-2, 4.3.0-3, 4.3.2-1, 4.3.2-2, 4.3.2-3, 4.3.2-4, 4.3.2-5, 4.3.6-1
- Fixed versions
- 4.3.2-1
- CVEs
- CVE-2026-67227
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 02:16 UTC · Revision 1
Source evidence
RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1, Atom exhaustion: toatom on global-parameter :name. resourceexists/2 (and the PUT/DELETE handlers) call rabbitdatacoercion:toatom/1 on the :name URL path segment. toatom/1 uses binarytoatom/2 (unsafe). The endpoint requires policymaker (not management, but below A user with the policymaker tag can crash the node by exhausting the atom table via repeated requests to /api/global-parameters/:name with unique :name Management plugin enabled policymaker tag ~1M HTTP. This issue is fixed in versions 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1.
osv:DEBIAN-CVE-2026-67227
rabbitmq-server
Fixed versions: Not specified
rabbitmq-server
Fixed versions: Not specified
rabbitmq-server
Fixed versions: 4.3.2-1
Complete source record
{
"id": "b4cfa309ce16fde0a9080933afa76e4a9552f0d2e183e464a6775aaf98f6c079",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-67227",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-67227",
"summary": "RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1, Atom exhaustion: toatom on global-parameter :name. resourceexists/2 (and the PUT/DELETE handlers) call rabbitdatacoercion:toatom/1 on the :name URL path segment. toatom/1 uses binarytoatom/2 (unsafe). The endpoint requires policymaker (not management, but below A user with the policymaker tag can crash the node by exhausting the atom table via repeated requests to /api/global-parameters/:name with unique :name Management plugin enabled policymaker tag ~1M HTTP. This issue is fixed in versions 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1.",
"evidence": "osv:DEBIAN-CVE-2026-67227",
"products": [
{
"name": {
"value": "rabbitmq-server",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.10.8-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "3.10.8-1.1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "3.10.8-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.10.8-3",
"evidence": "/affected/0/versions"
},
{
"value": "3.10.8-4",
"evidence": "/affected/0/versions"
},
{
"value": "3.12.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.12.1-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-10",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-11",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-12",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-13",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-14",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-3",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-4",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-5",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-6",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-8",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.5-9",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.2-3",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.2-4",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.2-5",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.6-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "rabbitmq-server",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.5-10",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-11",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-12",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-13",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-14",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-6",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-6+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-6+deb13u2",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-8",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.5-9",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.0-3",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.2-3",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.2-4",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.2-5",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.6-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "rabbitmq-server",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.3.2-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "4.0.5-10",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-11",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-12",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-13",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-14",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-6",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-8",
"evidence": "/affected/2/versions"
},
{
"value": "4.0.5-9",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.0-3",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-67227",
"aliases": [
"DEBIAN-CVE-2026-67227"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rabbitmq-server",
"purl": "pkg:deb/debian/rabbitmq-server?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.10.8-1.1",
"3.10.8-1.1+deb12u1",
"3.10.8-2",
"3.10.8-3",
"3.10.8-4",
"3.12.1-1",
"3.12.1-1.1",
"4.0.5-1",
"4.0.5-10",
"4.0.5-11",
"4.0.5-12",
"4.0.5-13",
"4.0.5-14",
"4.0.5-2",
"4.0.5-3",
"4.0.5-4",
"4.0.5-5",
"4.0.5-6",
"4.0.5-8",
"4.0.5-9",
"4.3.0-1",
"4.3.0-2",
"4.3.0-3",
"4.3.2-1",
"4.3.2-2",
"4.3.2-3",
"4.3.2-4",
"4.3.2-5",
"4.3.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67227.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rabbitmq-server",
"purl": "pkg:deb/debian/rabbitmq-server?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.0.5-10",
"4.0.5-11",
"4.0.5-12",
"4.0.5-13",
"4.0.5-14",
"4.0.5-6",
"4.0.5-6+deb13u1",
"4.0.5-6+deb13u2",
"4.0.5-8",
"4.0.5-9",
"4.3.0-1",
"4.3.0-2",
"4.3.0-3",
"4.3.2-1",
"4.3.2-2",
"4.3.2-3",
"4.3.2-4",
"4.3.2-5",
"4.3.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67227.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.2-1"
}
]
}
],
"package": {
"name": "rabbitmq-server",
"purl": "pkg:deb/debian/rabbitmq-server?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.0.5-10",
"4.0.5-11",
"4.0.5-12",
"4.0.5-13",
"4.0.5-14",
"4.0.5-6",
"4.0.5-8",
"4.0.5-9",
"4.3.0-1",
"4.3.0-2",
"4.3.0-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67227.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:05:41.615606109Z",
"provider": "osv",
"upstream": [
"CVE-2026-67227"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-67227"
]
},
"related_cves": [
{
"value": "CVE-2026-67227",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 424552,
"published_at": "2026-09-25T17:17:11.417+00:00"
}