CVE-2026-66075
published 2026-09-23CVE-2026-66075: RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, is_authorized/2 for the…
PriorityP430medium5.4CVSS 3.1
AVNACLPRLUINSUCNILAL
EPSS
0.22%
12.4th percentile
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, is_authorized/2 for the /federation-links/.../restart route uses is_authorized_monitor (accepts the monitoring tag), while allowed_methods permits DELETE and delete_resource/2 triggers rabbit_federation_link_sup:restart. There is no per-method elevation check and no comment marking it intentional. A read-only monitoring user can restart any federation link , a state-changing operation that disrupts message flow. Preconditions include rabbitmq_federation + rabbitmq_federation_management plugins enabled Attacker has credentials with the monitoring tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| broadcom | rabbitmq_server | >= 3.13.0 < 3.13.15 | 3.13.15 |
| broadcom | rabbitmq_server | >= 4.0.0 < 4.0.20 | 4.0.20 |
| broadcom | rabbitmq_server | >= 4.1.0 < 4.1.11 | 4.1.11 |
| broadcom | rabbitmq_server | >= 4.2.0 < 4.2.6 | 4.2.6 |
| broadcom | rabbitmq_server | >= 4.3.0 < 4.3.1 | 4.3.1 |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
| rabbitmq | rabbitmq-server | — | — |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
nvdv4.02.3LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/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_redhat2.3LOW
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Red Hat
rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw
vendor_redhat·2026-09-23·CVSS 2.3
CVE-2026-66075 [LOW] CWE-862 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw
rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, is_authorized/2 for the /federation-links/.../restart route uses is_authorized_monitor (accepts the monitoring tag), while allowed_methods permits DELETE and delete_resource/2 triggers rabbit_federation_link_sup:restart. There is no per-method elevation check and no comment marking it intentional. A read-only monitoring user can restart any federation link , a state-changing operation that disrupts message flow. Preconditions include rabbitmq_federation + rabbitmq_federation_management plugins enabled Attacker has credentials with the monitoring tag. This issue is fixed in versions 3.13.15, 4.0
VulDB
RabbitMQ up to 4.3.0 Federation Management is_authorized improper authorization
vuldb·2026-09-23·CVSS 2.3
CVE-2026-66075 [LOW] RabbitMQ up to 4.3.0 Federation Management is_authorized improper authorization
A vulnerability categorized as problematic has been discovered in RabbitMQ up to 3.13.14/4.0.19/4.1.10/4.2.5/4.3.0. The affected element is the function is_authorized of the component Federation Management. Executing a manipulation can lead to improper authorization.
This vulnerability appears as CVE-2026-66075. The attack may be performed from remote. There is no available exploit.
It is advisable to upgrade the affected component.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-66075 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw [fedora-all]
bugzilla·2026-09-24·CVSS 2.3
CVE-2026-66075 [LOW] CVE-2026-66075 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw [fedora-all]
CVE-2026-66075 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw [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 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, is_authorized/2 for the /federation-links/.../restart route uses is_authorized_monitor (accepts the monitoring tag), while allowed_methods permits DELETE and delete_resource/2 triggers rabbit_federation_link_sup:restart. There is no per-method elevation check and no comment marking it intentional. A read-only monitoring user can restart any feder
Bugzilla
CVE-2026-66075 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw
bugzilla·2026-09-23·CVSS 2.3
CVE-2026-66075 [LOW] CVE-2026-66075 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw
CVE-2026-66075 rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, is_authorized/2 for the /federation-links/.../restart route uses is_authorized_monitor (accepts the monitoring tag), while allowed_methods permits DELETE and delete_resource/2 triggers rabbit_federation_link_sup:restart. There is no per-method elevation check and no comment marking it intentional. A read-only monitoring user can restart any federation link , a state-changing operation that disrupts message flow. Preconditions include rabbitmq_federation + rabbitmq_federation_management plugins enabled Attacker has credentials with the monitoring tag. This issue is fixed in versio
2026-09-23
Published