PT-2026-98907 · Vmware · Rabbitmq
CVE-2026-67226
·
Published
2026-09-25
·
Updated
2026-10-01
CVSS v4.0
6.9
Medium
| Vector | 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 |
Name of the Vulnerable Software and Affected Versions
RabbitMQ versions 4.0.0 through 4.0.21
RabbitMQ versions 4.1.x prior to 4.1.14
RabbitMQ versions 4.2.x prior to 4.2.7
Description
An administrator can cause a node crash via a single request by creating a user or importing definitions containing approximately 1 million unique tags. This occurs because the
settags/2 function maps rabbitdatacoercion:toatom/1 over the user's tags list at the 'PUT /api/users' endpoint, leading to atom exhaustion. Atom exhaustion is a condition where the system runs out of unique atoms, which are immutable symbols used by the Erlang runtime, causing the application to terminate.Recommendations
Update RabbitMQ to version 4.0.22.
Update RabbitMQ to version 4.1.14.
Update RabbitMQ to version 4.2.7.
Exploit
Fix
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Rabbitmq