MediumFix available
rabbitmq-server — security advisory
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, RabbitMQ Management rendered an AMQP authorization-error reason containing an attacker-controlled queue name as HTML when the OAuth management UI was enabled. Exploitation requires an attacker with queue configure permission, a management administrator who can see but cannot read that queue, and the administrator clicking Get Message(s). A queue name containing a base element can then retarget the automatic relative refresh because the Content Security Policy omits base-uri and connect-src, and an attacker endpoint that permits the management origin through CORS can receive the victim's Authorization header. This issue is fixed in versions 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5.
- 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
- 4.3.6-1
- CVEs
- CVE-2026-67421
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 29 Oct 2026, 22:36 UTC · Revision 1
Source evidence
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, RabbitMQ Management rendered an AMQP authorization-error reason containing an attacker-controlled queue name as HTML when the OAuth management UI was enabled. Exploitation requires an attacker with queue configure permission, a management administrator who can see but cannot read that queue, and the administrator clicking Get Message(s). A queue name containing a base element can then retarget the automatic relative refresh because the Content Security Policy omits base-uri and connect-src, and an attacker endpoint that permits the management origin through CORS can receive the victim's Authorization header. This issue is fixed in versions 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5.
osv:DEBIAN-CVE-2026-67421
rabbitmq-server
Fixed versions: Not specified
rabbitmq-server
Fixed versions: Not specified
rabbitmq-server
Fixed versions: 4.3.6-1
Complete source record
{
"id": "ed0ab7f79b58fbf82f6f5840de9fad84a0e2cfa3a42e5ea538fdbc436e752ba9",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-67421",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-67421",
"summary": "RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, RabbitMQ Management rendered an AMQP authorization-error reason containing an attacker-controlled queue name as HTML when the OAuth management UI was enabled. Exploitation requires an attacker with queue configure permission, a management administrator who can see but cannot read that queue, and the administrator clicking Get Message(s). A queue name containing a base element can then retarget the automatic relative refresh because the Content Security Policy omits base-uri and connect-src, and an attacker endpoint that permits the management origin through CORS can receive the victim's Authorization header. This issue is fixed in versions 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5.",
"evidence": "osv:DEBIAN-CVE-2026-67421",
"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": "4.3.6-1",
"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"
},
{
"value": "4.3.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.2-3",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.2-4",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.2-5",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-67421",
"aliases": [
"DEBIAN-CVE-2026-67421"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/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-2026-67421.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-2026-67421.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.6-1"
}
]
}
],
"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",
"4.3.2-1",
"4.3.2-2",
"4.3.2-3",
"4.3.2-4",
"4.3.2-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67421.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-10T22:00:24.122132023Z",
"provider": "osv",
"upstream": [
"CVE-2026-67421"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-67421"
]
},
"related_cves": [
{
"value": "CVE-2026-67421",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 276607,
"published_at": "2026-09-25T17:17:14.12+00:00"
}