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CVE-2026-67226

nvd nist
Published: Sep 25, 2026Modified: Oct 20, 2026

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6.9
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/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
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CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/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:XShow less
Source: security-advisories@github.com (Secondary)

Description

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7, Admin-only atom exhaustion: PUT /api/users tags list. settags/2 maps rabbitdatacoercion:toatom/1 over the user's tags list. The 20 MB management body limit fits ~3-4M short tag strings. An administrator can crash the node in a single request by creating a user (or importing definitions) with ~1M unique tag administrator. This issue is fixed in versions 4.0.22 and 4.1.14 and 4.2.7.

Affected (3)

Broadcom
1 product
Rabbitmq Server
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Broadcom
Rabbitmq Server
4.0.0 ≤ version < 4.0.22
Rabbitmq Server
4.1.0 ≤ version < 4.1.14
Rabbitmq Server
4.2.0 ≤ version < 4.2.7

Related CWEs

CWE-400
Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References (4)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Release NotesPatch
Source: security-advisories@github.com
Vendor Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Vendor Advisory

Timeline

No history available yet.