CVE-2026-67218
published 2026-09-23CVE-2026-67218: RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, accept_content/2 at line 56 calls…
PriorityP341medium6.5CVSS 3.1
AVNACLPRHUINSUCNIHAH
EPSS
0.37%
30.0th percentile
RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, accept_content/2 at line 56 calls rabbit_stream_manager:create_super_stream/... directly after is_authorized (which only checks the management tag + vhost access via is_authorized_vhost). The stream-protocol equivalent (rabbit_stream_reader.erl create_super_stream handler) calls rabbit_stream_utils:check_super_stream_management_permitted/4 which enforces configure on the exchange and each partition queue. The HTTP handler omits this call entirely. A user with management tag and vhost access , but no configure permission on any resource , can create super-streams (an exchange + N partition stream queues + bindings) via the HTTP API. The native stream-protocol path enforces configure on each resource; the HTTP path does not, creating a privilege escalation from 'can view' to 'can create persistent cluster-wide resources.' Preconditions include rabbitmq_stream_management plugin enabled management tag + vhost access (no resource permissions needed). This issue is fixed in versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| broadcom | rabbitmq_server | >= 4.0.0 < 4.0.22 | 4.0.22 |
| broadcom | rabbitmq_server | >= 4.1.0 < 4.1.11 | 4.1.11 |
| broadcom | rabbitmq_server | >= 4.2.0 < 4.2.6 | 4.2.6 |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
nvdv4.02.1LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat2.1LOW
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VulDB
RabbitMQ up to 4.0.21/4.1.10/4.2.5 HTTP API rabbit_stream_reader.erl accept_content privileges management
vuldb·2026-09-23·CVSS 2.1
CVE-2026-67218 [LOW] RabbitMQ up to 4.0.21/4.1.10/4.2.5 HTTP API rabbit_stream_reader.erl accept_content privileges management
A vulnerability, which was classified as problematic, has been found in RabbitMQ up to 4.0.21/4.1.10/4.2.5. This affects the function accept_content of the file rabbit_stream_reader.erl of the component HTTP API. The manipulation leads to improper privilege management.
This vulnerability is referenced as CVE-2026-67218. Remote exploitation of the attack is possible. No exploit is available.
It is advisable to upgrade the affected component.
Red Hat
rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation
vendor_redhat·2026-09-23·CVSS 2.1
CVE-2026-67218 [LOW] CWE-862 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation
rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation
RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, accept_content/2 at line 56 calls rabbit_stream_manager:create_super_stream/... directly after is_authorized (which only checks the management tag + vhost access via is_authorized_vhost). The stream-protocol equivalent (rabbit_stream_reader.erl create_super_stream handler) calls rabbit_stream_utils:check_super_stream_management_permitted/4 which enforces configure on the exchange and each partition queue. The HTTP handler omits this call entirely. A user with management tag and vhost access , but no configure permission on any resource , can create super-streams (an exchange + N partition stream queues + bindings)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-67218 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation [fedora-all]
bugzilla·2026-09-24·CVSS 2.1
CVE-2026-67218 [LOW] CVE-2026-67218 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation [fedora-all]
CVE-2026-67218 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, accept_content/2 at line 56 calls rabbit_stream_manager:create_super_stream/... directly after is_authorized (which only checks the management tag + vhost access via is_authorized_vhost). The stream-protocol equivalent (rabbit_stream_reader.erl create_super_stream handler) calls rabbit_stream_utils:check_super_stream_management_permitted/4 which enforces configure on
Bugzilla
CVE-2026-67218 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation
bugzilla·2026-09-23·CVSS 2.1
CVE-2026-67218 [LOW] CVE-2026-67218 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation
CVE-2026-67218 rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation
RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, accept_content/2 at line 56 calls rabbit_stream_manager:create_super_stream/... directly after is_authorized (which only checks the management tag + vhost access via is_authorized_vhost). The stream-protocol equivalent (rabbit_stream_reader.erl create_super_stream handler) calls rabbit_stream_utils:check_super_stream_management_permitted/4 which enforces configure on the exchange and each partition queue. The HTTP handler omits this call entirely. A user with management tag and vhost access , but no configure permission on any resource , can create super-streams (an exchange + N partition stream queu
2026-09-23
Published