DEBIAN-CVE-2026-66067
RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, The stream open handler calls only check_vhost_access; it omits the node/vhost/user connection-limit checks that rabbit_reader performs for AMQP. A developer %% FIXME comment at the cited line explicitly acknowledges the gap. No compensating enforcement exists in connection tracking or elsewhere in rabbitmq_stream. An authenticated tenant can fully bypass operator-configured per-user and per-vhost connection caps by connecting via port 5552 instead of 5672. Preconditions include rabbitmq_stream plugin enabled Authenticated stream-protocol credentials Operator relies on per-user/per-vhost connection limits for tenant isolation. This issue is fixed in versions 4.2.7 and 4.3.1.
DEBIAN-CVE-2026-66067
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-66067
rabbitmq-server
Source reference: /affected/0/package/name
- Affected versions
- 4.0.5-10
Source reference:
/affected/0/versions4.0.5-11Source reference:
/affected/0/versions4.0.5-12Source reference:
/affected/0/versions4.0.5-13Source reference:
/affected/0/versions4.0.5-14Source reference:
/affected/0/versions4.0.5-6Source reference:
/affected/0/versions4.0.5-8Source reference:
/affected/0/versions4.0.5-9Source reference:
/affected/0/versions4.3.0-1Source reference:
/affected/0/versions4.3.0-2Source reference:
/affected/0/versions4.3.0-3Source reference:
/affected/0/versions - Fixed versions
- 4.3.2-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"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-2026-66067.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #15029 · Revision 1
- Added to Heist Feed
- Publisher date