RabbitMQ installers on Windows prior to version 3.8.16 do not harden plugin directory permissions, potentially allowing attackers with suff…

published 2021-05-18 5 y ago modified 2026-06-17 4 mo ago also BIT-rabbitmq-2021-22117 , EUVD-2021-9275

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

RabbitMQ installers on Windows prior to version 3.8.16 do not harden plugin directory permissions, potentially allowing attackers with sufficient local filesystem permissions to add arbitrary plugins.

Patch / fix

fixed in 2

bitnami rabbitmq 3.8.16
broadcom rabbitmq_server 3.8.16

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P
OSV	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
bitnami	rabbitmq	>=3.8.0, <3.8.16	3.8.16

Affected products

n/a RabbitMQ

Classification

Weakness

CWE-94 Improper Control of Generation of Code
CWE-732 Incorrect Permission Assignment for Critical Resource

References

tanzu.vmware.com /security/cve-2021-22117
vendor-advisory, web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary