CVE-2026-57217: RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.21, 4.1.11, and 4.2.6, RabbitMQ topic authorization can allow restricted topic writes and…

PriorityP341medium6.5CVSS 3.1

AVNACLPRLUINSUCHINAN

EPSS

0.35%

27.8th percentile

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.21, 4.1.11, and 4.2.6, RabbitMQ topic authorization can allow restricted topic writes and binds during metadata-store failures because topic-permission lookup errors from Khepri can collapse to undefined, which the internal backend treats as allow. This issue is fixed in versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
broadcom	rabbitmq_server	>= 3.13.0 < 4.2.6	4.2.6
rabbitmq	rabbitmq-server	—	—
rabbitmq	rabbitmq-server	—	—
rabbitmq	rabbitmq-server	—	—
rabbitmq	rabbitmq-server	—	—

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvdv4.07.0HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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

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